def testtrapv2(self):
'''testtrapv2'''
# Traps have quite different semantics among proto versions
if verID == api.protoVersion2c:
var = []
oid = (1, 3, 6, 1, 4, 1, 2011, 2, 235, 1, 1, 4, 1, 0)
# 1.3.6.1.4.1.2011.2.235.1.1.15.50.1.5(cpuClockRate).0
# 1.3.6.1.4.1.2011.2.235.1.1.4.1.0 trapEnable
val = pMod.Integer(1)
var.append((oid, val))
pMod.apiTrapPDU.setVarBinds(trapPDU, var)
# Build message
trapMsg = pMod.Message()
pMod.apiMessage.setDefaults(trapMsg)
pMod.apiMessage.setCommunity(trapMsg, community)
pMod.apiMessage.setPDU(trapMsg, trapPDU)
transportDispatcher = AsynsockDispatcher()
transportDispatcher.registerTransport(
udp.domainName,
udp.UdpSocketTransport().openClientMode())
# 本机测试使用localhost，应为对应trap server 的IP地址。
transportDispatcher.sendMessage(encoder.encode(trapMsg),
udp.domainName, (trapdip, 162))
transportDispatcher.runDispatcher()
transportDispatcher.closeDispatcher()
self.assertTrue(True)
def runDispatcherFunction():
transportDispatcher = AsynsockDispatcher()
transportDispatcher.registerRecvCbFun(cbFun)
# UDP/IPv4
transportDispatcher.registerTransport(
udp.domainName,
udp.UdpSocketTransport().openServerMode(('', 162))
# if test.py is running inside a container named "ra", the traps messages will be for exampleL:
#snmptrap -v2c -c public ra:162 '' SNMPv2-MIB::coldStart.0 SNMPv2-MIB::sysContact.0 s 'trap testing number #7'
)
# UDP/IPv6
#transportDispatcher.registerTransport(
# udp6.domainName, udp6.Udp6SocketTransport().openServerMode(('::1', 162))
#)
transportDispatcher.jobStarted(1)
try:
# Dispatcher will never finish as job#1 never reaches zero
print('run dispatcher')
transportDispatcher.runDispatcher()
except:
transportDispatcher.closeDispatcher()
raise
def setup_snmp():
"""Configure SNMP server listener"""
transport_dispatcher = AsynsockDispatcher()
transport_dispatcher.registerRecvCbFun(snmp_trap_receiver)
# UDP/IPv4
transport_dispatcher.registerTransport(
udp.domainName,
udp.UdpSocketTransport().openServerMode(('0.0.0.0', 162)))
# UDP/IPv6
transport_dispatcher.registerTransport(
udp6.domainName,
udp6.Udp6SocketTransport().openServerMode(('::1', 162)))
transport_dispatcher.jobStarted(1)
try:
# Dispatcher will never finish as job#1 never reaches zero
transport_dispatcher.runDispatcher()
except:
transport_dispatcher.closeDispatcher()
raise
def main(options, args):
logname = 'summit_ups'
logger = ssdlog.make_logger(logname, options)
power_off = 'obcpPoff'
power_off = os.path.join(options.dir, power_off)
try:
os.remove(power_off)
except Exception as e:
logger.warn('warn: is %s there?? %s' % (power_off, e))
snmp = SnmpTrap(power_off, logger)
try:
transportDispatcher = AsynsockDispatcher()
transportDispatcher.registerTransport(
udp.domainName,
udp.UdpSocketTransport().openServerMode(
('%s' % options.mgrhost, 162)))
transportDispatcher.registerRecvCbFun(snmp.trap_cb)
transportDispatcher.jobStarted(1) # this job would never finish
transportDispatcher.runDispatcher()
except KeyboardInterrupt:
logger.info('keyboard interrupting...')
snmp.ev_quit.set()
except Exception as e:
logger.error('error: %s' % e)
snmp.ev_quit.set()
logger.error('error: snmp trap terminated..')
def receive_trap(self):
transportDispatcher = AsynsockDispatcher()
transportDispatcher.registerRecvCbFun(cbFun)
# UDP/IPv4
transportDispatcher.registerTransport(
udp.domainName, udp.UdpSocketTransport().openServerMode(('192.168.115.187', 162))
)
# UDP/IPv6
transportDispatcher.registerTransport(
udp6.domainName, udp6.Udp6SocketTransport().openServerMode(('::1', 162))
)
transportDispatcher.jobStarted(1)
try:
# Dispatcher will never finish as job#1 never reaches zero
print('run dispatcher')
transportDispatcher.runDispatcher()
except:
transportDispatcher.closeDispatcher()
raise
def send(self, host, community, oid, value):
self.pMod.apiPDU.setDefaults(self.reqPDU)
self.pMod.apiPDU.setVarBinds(
self.reqPDU,
((oid, self.pMod.OctetString(value)),
)
)
# Build message
reqMsg = self.pMod.Message()
self.pMod.apiMessage.setDefaults(reqMsg)
self.pMod.apiMessage.setCommunity(reqMsg, community)
self.pMod.apiMessage.setPDU(reqMsg, self.reqPDU)
transportDispatcher = AsynsockDispatcher()
transportDispatcher.registerRecvCbFun(self.cbRecvFun)
transportDispatcher.registerTimerCbFun(self.cbTimerFun)
# UDP/IPv4
transportDispatcher.registerTransport(
udp.domainName, udp.UdpSocketTransport().openClientMode()
)
# Pass message to dispatcher
transportDispatcher.sendMessage(
encoder.encode(reqMsg), udp.domainName, (host, 161)
)
transportDispatcher.jobStarted(1)
# Dispatcher will finish as job#1 counter reaches zero
transportDispatcher.runDispatcher()
transportDispatcher.closeDispatcher()
def query(self, oidCountersDict):
resultsDict = dict()
# SNMP protocol version to use
pMod = api.protoModules[api.protoVersion1]
# Build PDU
reqPDU = pMod.GetRequestPDU()
pMod.apiPDU.setDefaults(reqPDU)
# Create a tuple of OIDs tuples
oidList = list()
for oid in oidCountersDict.values():
oidList.append((oid, pMod.Null()))
OIDs = tuple(oidList)
pMod.apiPDU.setVarBinds(reqPDU, (OIDs))
# Build message
reqMsg = pMod.Message()
pMod.apiMessage.setDefaults(reqMsg)
pMod.apiMessage.setCommunity(reqMsg, 'public')
pMod.apiMessage.setPDU(reqMsg, reqPDU)
def cbTimerFun(timeNow, startedAt=time()):
if timeNow - startedAt > self.snmpTimeout:
transportDispatcher.jobFinished(1)
raise SNMPTimeOutError("The host %s has not responded in the specified timeout of %ss!" % (self.host, self.snmpTimeout))
def cbRecvFun(transportDispatcher, transportDomain, transportAddress, wholeMsg, reqPDU=reqPDU):
while wholeMsg:
rspMsg, wholeMsg = decoder.decode(wholeMsg, asn1Spec=pMod.Message())
rspPDU = pMod.apiMessage.getPDU(rspMsg)
# Match response to request
if pMod.apiPDU.getRequestID(reqPDU)==pMod.apiPDU.getRequestID(rspPDU):
# Check for SNMP errors reported
errorStatus = pMod.apiPDU.getErrorStatus(rspPDU)
if errorStatus:
print errorStatus.prettyPrint()
raise SNMPoIDNotSupported("%s: An requested OID is not supported by this device!" % errorStatus.prettyPrint())
else:
for oid, val in pMod.apiPDU.getVarBinds(rspPDU):
#print '%s = %s' % (oid.prettyPrint(), val)
resultsDict[str(oid)] = str(val)
transportDispatcher.jobFinished(1)
return wholeMsg
transportDispatcher = AsynsockDispatcher()
transportDispatcher.registerTransport(udp.domainName, udp.UdpSocketTransport().openClientMode())
transportDispatcher.registerRecvCbFun(cbRecvFun)
transportDispatcher.registerTimerCbFun(cbTimerFun)
transportDispatcher.sendMessage(encoder.encode(reqMsg), udp.domainName, (self.host, int(self.port)))
transportDispatcher.jobStarted(1)
transportDispatcher.runDispatcher()
transportDispatcher.closeDispatcher()
return resultsDict
def Send_GetSystemPDUName(reqMsg, hostname, port=161):
transportDispatcher = AsynsockDispatcher()
transportDispatcher.registerTransport(udp.domainName, udp.UdpSocketTransport().openClientMode())
transportDispatcher.registerRecvCbFun(cbRecvFun)
transportDispatcher.registerTimerCbFun(cbTimerFun)
transportDispatcher.sendMessage(encoder.encode(reqMsg), udp.domainName, (hostname, 161))
transportDispatcher.jobStarted(1)
transportDispatcher.runDispatcher()
transportDispatcher.closeDispatcher()
def run(self):
transport_dispatcher = AsynsockDispatcher()
transport_dispatcher.registerRecvCbFun(self._callback)
transport_dispatcher.registerTransport(udp.domainName,
udp.UdpSocketTransport().openServerMode((self.address, self.port)))
transport_dispatcher.jobStarted(1)
try:
transport_dispatcher.runDispatcher()
except:
transport_dispatcher.closeDispatcher()
raise
def Send_GetSystemPDUName(reqMsg, hostname, port=161):
transportDispatcher = AsynsockDispatcher()
transportDispatcher.registerTransport(
udp.domainName,
udp.UdpSocketTransport().openClientMode())
transportDispatcher.registerRecvCbFun(cbRecvFun)
transportDispatcher.registerTimerCbFun(cbTimerFun)
transportDispatcher.sendMessage(encoder.encode(reqMsg), udp.domainName,
(hostname, 161))
transportDispatcher.jobStarted(1)
transportDispatcher.runDispatcher()
transportDispatcher.closeDispatcher()
def sendSNMPMessage(self, reqMsg):
transportDispatcher = AsynsockDispatcher()
transportDispatcher.registerTransport(udp.domainName, udp.UdpSocketTransport().openClientMode())
transportDispatcher.registerRecvCbFun(self.cbRecvFun)
transportDispatcher.registerTimerCbFun(self.cbTimerFun)
transportDispatcher.sendMessage(encoder.encode(reqMsg), udp.domainName, (self.host, self.port))
transportDispatcher.jobStarted(1)
transportDispatcher.runDispatcher()
transportDispatcher.closeDispatcher()
def run(self):
"""Run the sensor on its own thread"""
# Check for debug mode being activated/deactivated
self._read_my_msgQ_noWait()
try:
self._log_debug("Start processing")
# Create MIB loader to lookup oids sent in traps
self._mib_builder()
# Create an asynchronous dispatcher and register a callback method to handle incoming traps
transportDispatcher = AsynsockDispatcher()
transportDispatcher.registerRecvCbFun(self._trap_catcher)
# UDP/IPv4
transportDispatcher.registerTransport(
udp.domainName,
udp.UdpSocketTransport().openServerMode(
(self._bind_ip, self._bind_port)))
# UDP/IPv6
transportDispatcher.registerTransport(
udp6.domainName,
udp6.Udp6SocketTransport().openServerMode(
('::1', self._bind_port)))
transportDispatcher.jobStarted(1)
try:
# Dispatcher will never finish as job #1 never reaches zero
transportDispatcher.runDispatcher()
except Exception as ae:
self._log_debug("Exception: %r" % ae)
transportDispatcher.closeDispatcher()
self._log_debug("Finished processing, restarting SNMP listener")
# Reset debug mode if persistence is not enabled
self._disable_debug_if_persist_false()
# Schedule the next time to run thread
self._scheduler.enter(10, self._priority, self.run, ())
# Could not bind to IP:port, log it and exit out module
except Exception as ae:
self._log_debug(
"Unable to process SNMP traps from this node, closing module.")
self._log_debug(
f"SNMP Traps sensor attempted to bind to {self._bind_ip}:{self._bind_port}"
)
def run(self):
transport_dispatcher = AsynsockDispatcher()
transport_dispatcher.registerRecvCbFun(self._callback)
transport_dispatcher.registerTransport(
udp.domainName,
udp.UdpSocketTransport().openServerMode((self.address, self.port)))
transport_dispatcher.jobStarted(1)
try:
transport_dispatcher.runDispatcher()
except Exception as exc:
transport_dispatcher.closeDispatcher()
raise exc
def run(self):
# Build PDU
reqPDU = pMod.GetRequestPDU()
pMod.apiPDU.setDefaults(reqPDU)
pduList = []
if self._CbLastChange != None:
pduList.append(((1,3,6,1,2,1,2,2,1,9,self.SNMPIndex), pMod.Null()))
if self._CbInOctets != None:
pduList.append(((1,3,6,1,2,1,2,2,1,10,self.SNMPIndex), pMod.Null()))
if self._CbInUnicastPkts != None:
pduList.append(((1,3,6,1,2,1,2,2,1,11,self.SNMPIndex), pMod.Null()))
if self._CbInNUnicastPkts != None:
pduList.append(((1,3,6,1,2,1,2,2,1,12,self.SNMPIndex), pMod.Null()))
if self._CbInDiscard != None:
pduList.append(((1,3,6,1,2,1,2,2,1,13,self.SNMPIndex), pMod.Null()))
if self._CbInErrors != None:
pduList.append(((1,3,6,1,2,1,2,2,1,14,self.SNMPIndex), pMod.Null()))
if self._CbInUnknownProtos != None:
pduList.append(((1,3,6,1,2,1,2,2,1,15,self.SNMPIndex), pMod.Null()))
if self._CbOutOctets != None:
pduList.append(((1,3,6,1,2,1,2,2,1,16,self.SNMPIndex), pMod.Null()))
if self._CbOutUnicastPkts != None:
pduList.append(((1,3,6,1,2,1,2,2,1,17,self.SNMPIndex), pMod.Null()))
if self._CbOutNUnicastPkts != None:
pduList.append(((1,3,6,1,2,1,2,2,1,18,self.SNMPIndex), pMod.Null()))
if self._CbOutDiscard != None:
pduList.append(((1,3,6,1,2,1,2,2,1,19,self.SNMPIndex), pMod.Null()))
if self._CbOutErrors != None:
pduList.append(((1,3,6,1,2,1,2,2,1,20,self.SNMPIndex), pMod.Null()))
pMod.apiPDU.setVarBinds(reqPDU, pduList)
self._reqPDU = reqPDU
# Build message
reqMsg = pMod.Message()
pMod.apiMessage.setDefaults(reqMsg)
pMod.apiMessage.setCommunity(reqMsg, self._agent)
pMod.apiMessage.setPDU(reqMsg, reqPDU)
transportDispatcher = AsynsockDispatcher()
transportDispatcher.registerTransport(
udp.domainName, udp.UdpSocketTransport().openClientMode()
)
transportDispatcher.registerRecvCbFun(self._cbRecvFun)
while not self._IsStopped():
if not transportDispatcher.transportsAreWorking():
transportDispatcher.sendMessage(encoder.encode(reqMsg), udp.domainName, (self._host, self._port))
transportDispatcher.jobStarted(1)
transportDispatcher.runDispatcher()
sleep(self._interval)
def snmp_trap_receiver(ifname, port=162):
if_ip = get_ip_address(ifname)
transportDispatcher = AsynsockDispatcher()
transportDispatcher.registerRecvCbFun(cbFun)
transportDispatcher.registerTransport(
udp.domainName,
udp.UdpSocketTransport().openServerMode((if_ip, port)))
transportDispatcher.jobStarted(1)
print('SNMP Trap Receiver Started!!!')
try:
transportDispatcher.runDispatcher()
except:
transportDispatcher.closeDispatcher()
raise
class SnmpServer(threading.Thread):
def __init__(self, address):
threading.Thread.__init__(self)
self._address = address
self._transportDispatcher = AsynsockDispatcher()
self._transportDispatcher.registerRecvCbFun(self.onSnmpMessage)
def run(self):
self._transportDispatcher.registerTransport(udp.domainName, udp.UdpSocketTransport().openServerMode(self._address))
getLogger().info("Now listening on %s:%s" % self._address)
self._transportDispatcher.jobStarted(1)
try:
self._transportDispatcher.runDispatcher(timeout = 1)
except Exception, e:
getLogger().error(u"Error while handling an SNMP message: %s" % unicode(e))
def run(self):
transportDispatcher = AsynsockDispatcher()
transportDispatcher.registerRecvCbFun(cbFun)
# UDP/IPv4
transportDispatcher.registerTransport(
udp.domainName, udp.UdpSocketTransport().openServerMode(('0.0.0.0', 162))
)
transportDispatcher.jobStarted(1)
try:
# Dispatcher will never finish as job#1 never reaches zero
transportDispatcher.runDispatcher()
except:
transportDispatcher.closeDispatcher()
raise
def sent_snmp_trap(product, level, regionId, instanceName, name):
# Protocol version to use
verID = api.protoVersion2c
pMod = api.protoModules[verID]
# Build PDU
trapPDU = pMod.TrapPDU()
pMod.apiTrapPDU.setDefaults(trapPDU)
# Traps have quite different semantics among proto versions
if verID == api.protoVersion2c:
var = []
oid = (1, 3, 6, 1, 4, 1, 12149, 1)
val = pMod.OctetString('product:%s' % product)
var.append((oid, val))
oid = (1, 3, 6, 1, 4, 1, 12149, 2)
val = pMod.OctetString('level:%s' % level)
var.append((oid, val))
oid = (1, 3, 6, 1, 4, 1, 12149, 3)
val = pMod.OctetString('regionId:%s' % regionId)
var.append((oid, val))
oid = (1, 3, 6, 1, 4, 1, 12149, 4)
val = pMod.OctetString('instanceName:%s' % instanceName)
var.append((oid, val))
oid = (1, 3, 6, 1, 4, 1, 12149, 5)
val = pMod.OctetString('name:%s' % name)
var.append((oid, val))
pMod.apiTrapPDU.setVarBinds(trapPDU, var)
print(var)
save_log(str(var))
# Build message
trapMsg = pMod.Message()
pMod.apiMessage.setDefaults(trapMsg)
pMod.apiMessage.setCommunity(trapMsg, 'public')
pMod.apiMessage.setPDU(trapMsg, trapPDU)
transportDispatcher = AsynsockDispatcher()
transportDispatcher.registerTransport(
udp.domainName,
udp.UdpSocketTransport().openClientMode())
transportDispatcher.sendMessage(encoder.encode(trapMsg), udp.domainName,
('localhost', 162))
transportDispatcher.runDispatcher()
transportDispatcher.closeDispatcher()
def main():
'main program function'
if os.path.isfile(CONFIG_FILE):
filename = CONFIG_FILE
elif os.path.isfile('/config/{0}'.format(CONFIG_FILE)):
filename = '/config/{0}'.format(CONFIG_FILE)
else:
print 'Error: cannot find configuration file', CONFIG_FILE
return
processConfig(filename)
transportDispatcher = AsynsockDispatcher()
transportDispatcher.registerRecvCbFun(cbFun)
# UDP/IPv4
if gArgs.virtual_router:
lookupVR(gArgs.virtual_router)
# During startup, the IP address may not be ready yet. So we try a few times
for retry in range(30):
try:
transportDispatcher.registerTransport(
udp.domainName,
udp.UdpSocketTransport().openServerMode(
(gArgs.ip_address, 162)))
break
except Exception:
time.sleep(5)
# UDP/IPv6
transportDispatcher.registerTransport(
udp6.domainName,
udp6.Udp6SocketTransport().openServerMode(('::1', 162)))
transportDispatcher.jobStarted(1)
try:
# Dispatcher will never finish as job#1 never reaches zero
transportDispatcher.runDispatcher()
except Exception:
transportDispatcher.closeDispatcher()
raise
def snmp_trap_receiver(ifname, port=162):
if_ip = get_ip_address(ifname)
transportDispatcher = AsynsockDispatcher() # 创建实例
transportDispatcher.registerRecvCbFun(cbFun) # 调用处理Trap信息的函数
# UDP/IPv4
transportDispatcher.registerTransport(
udp.domainName, udp.UdpSocketTransport().openServerMode((if_ip, port)) # 绑定到本地地址与UDP/162号端口
)
transportDispatcher.jobStarted(1) # 开始工作
print("SNMP Trap Receiver Started!!!")
try:
# Dispatcher will never finish as job#1 never reaches zero
transportDispatcher.runDispatcher() # 运行
except:
transportDispatcher.closeDispatcher()
raise
def notif_Receiver():
def cbFun(transportDispatcher, transportDomain, transportAddress,
wholeMsg):
transportDispatcher.jobFinished(1)
return
transportDispatcher = AsynsockDispatcher()
transportDispatcher.registerRecvCbFun(cbFun)
transportDispatcher.registerTransport(
udp.domainName,
udp.UdpSocketTransport().openServerMode((raspberry_ip, 1162)))
transportDispatcher.jobStarted(1)
try:
transportDispatcher.runDispatcher()
except:
transportDispatcher.closeDispatcher()
raise
return
def main():
'main program function'
if os.path.isfile(CONFIG_FILE):
filename = CONFIG_FILE
elif os.path.isfile('/config/{0}'.format(CONFIG_FILE)):
filename = '/config/{0}'.format(CONFIG_FILE)
else:
print 'Error: cannot find configuration file', CONFIG_FILE
return
processConfig(filename)
transportDispatcher = AsynsockDispatcher()
transportDispatcher.registerRecvCbFun(cbFun)
# UDP/IPv4
if gArgs.virtual_router:
lookupVR(gArgs.virtual_router)
# During startup, the IP address may not be ready yet. So we try a few times
for retry in range(30):
try:
transportDispatcher.registerTransport(
udp.domainName, udp.UdpSocketTransport().openServerMode((gArgs.ip_address, 162))
)
break
except Exception:
time.sleep(5)
# UDP/IPv6
transportDispatcher.registerTransport(
udp6.domainName, udp6.Udp6SocketTransport().openServerMode(('::1', 162))
)
transportDispatcher.jobStarted(1)
try:
# Dispatcher will never finish as job#1 never reaches zero
transportDispatcher.runDispatcher()
except Exception:
transportDispatcher.closeDispatcher()
raise
def _trap_receiver(trap_filter, host, port, timeout):
started = time.time()
def _trap_timer_cb(now):
if now - started > timeout:
raise AssertionError('No matching trap received in %s.' %
robot.utils.secs_to_timestr(timeout))
def _trap_receiver_cb(transport, domain, sock, msg):
if decodeMessageVersion(msg) != protoVersion2c:
raise RuntimeError('Only SNMP v2c traps are supported.')
req, msg = decoder.decode(msg, asn1Spec=v2c.Message())
pdu = v2c.apiMessage.getPDU(req)
# ignore any non trap PDUs
if not pdu.isSameTypeWith(v2c.TrapPDU()):
return
if trap_filter(domain, sock, pdu):
raise StopListener()
# Stop the receiver if the trap we are looking for was received.
if False:
raise StopListener()
dispatcher = AsynsockDispatcher()
dispatcher.registerRecvCbFun(_trap_receiver_cb)
dispatcher.registerTimerCbFun(_trap_timer_cb)
transport = udp.UdpSocketTransport().openServerMode((host, port))
dispatcher.registerTransport(udp.domainName, transport)
# we'll never finish, except through an exception
dispatcher.jobStarted(1)
try:
dispatcher.runDispatcher()
except StopListener:
pass
finally:
dispatcher.closeDispatcher()
def _trap_receiver(trap_filter, host, port, timeout):
started = time.time()
def _trap_timer_cb(now):
if now - started > timeout:
raise AssertionError('No matching trap received in %s.' %
robot.utils.secs_to_timestr(timeout))
def _trap_receiver_cb(transport, domain, sock, msg):
if decodeMessageVersion(msg) != protoVersion2c:
raise RuntimeError('Only SNMP v2c traps are supported.')
req, msg = decoder.decode(msg, asn1Spec=v2c.Message())
pdu = v2c.apiMessage.getPDU(req)
# ignore any non trap PDUs
if not pdu.isSameTypeWith(v2c.TrapPDU()):
return
if trap_filter(domain, sock, pdu):
raise StopListener()
# Stop the receiver if the trap we are looking for was received.
if False:
raise StopListener()
dispatcher = AsynsockDispatcher()
dispatcher.registerRecvCbFun(_trap_receiver_cb)
dispatcher.registerTimerCbFun(_trap_timer_cb)
transport = udp.UdpSocketTransport().openServerMode((host, port))
dispatcher.registerTransport(udp.domainName, transport)
# we'll never finish, except through an exception
dispatcher.jobStarted(1)
try:
dispatcher.runDispatcher()
except StopListener:
pass
finally:
dispatcher.closeDispatcher()
def start(self):
'''
' 启动监听进程
' raise Exception: 异常停止时抛出
'''
transportDispatcher = AsynsockDispatcher()
transportDispatcher.registerRecvCbFun(self._cbHandler)
# UDP/IPv4
transportDispatcher.registerTransport(\
udp.domainName, udp.UdpSocketTransport().openServerMode(\
(str(self._configdata.Localaddress), \
int(self._configdata.Trapport)))
)
transportDispatcher.jobStarted(1)
try:
# 分发器后台运行，任务编号1#。获取0值时停止
transportDispatcher.runDispatcher()
except Exception:
transportDispatcher.closeDispatcher()
raise
def start_agent(self):
print 'start_agent'
try:
transportDispatcher = AsynsockDispatcher()
transportDispatcher.registerRecvCbFun(self.cbFun) #obrabotchik
transportDispatcher.registerTransport(
udp.domainName, udp.UdpSocketTransport().openServerMode(('localhost', 161))
)
transportDispatcher.jobStarted(1)
except Exception as error:
print 'error %s' % error
try:
# Dispatcher will never finish as job#1 never reaches zero
transportDispatcher.runDispatcher()
except:
transportDispatcher.closeDispatcher()
print 'error run disp'
raise
def run(self):
transportDispatcher = AsynsockDispatcher()
transportDispatcher.registerRecvCbFun(trapCallback)
if self.ipv6:
transport = udp.Udp6SocketTransport()
domainName = udp6.domainName
else:
transport = udp.UdpSocketTransport()
domainName = udp.domainName
try:
transportDispatcher.registerTransport(domainName, transport.openServerMode((self.host, self.port)))
transportDispatcher.jobStarted(1)
# Dispatcher will never finish as job#1 never reaches zero
transportDispatcher.runDispatcher()
except RuntimeError,e:
transportDispatcher.closeDispatcher()
logging.error("Looks like an error: %s" % str(e))
sys.exit(1)
def run(self):
transportDispatcher = AsynsockDispatcher()
transportDispatcher.registerRecvCbFun(trapCallback)
if self.ipv6:
transport = udp.Udp6SocketTransport()
domainName = udp6.domainName
else:
transport = udp.UdpSocketTransport()
domainName = udp.domainName
try:
transportDispatcher.registerTransport(domainName, transport.openServerMode((self.host, self.port)))
transportDispatcher.jobStarted(1)
# Dispatcher will never finish as job#1 never reaches zero
transportDispatcher.runDispatcher()
except: # catch *all* exceptions
e = sys.exc_info()[1]
transportDispatcher.closeDispatcher()
logging.error("Failed to register transport and run dispatcher: %s" % str(e))
sys.exit(1)
def snmp_msg_send():
try:
verID = api.protoVersion2c
pMod = api.protoModules[verID]
trapPDU = pMod.TrapPDU()
pMod.apiTrapPDU.setDefaults(trapPDU)
now_time = datetime.now().strftime('%Y-%m-%d %H:%M:%S')
# Traps have quite different semantics among proto versions
if verID == api.protoVersion2c:
var = []
oid = (1, 3, 6, 1, 4, 1, 3902, 2, 2, 4)
val = pMod.OctetString("2001")
var.append((oid, val))
oid = (1, 3, 6, 1, 4, 1, 3902, 2, 2, 5)
val = pMod.OctetString("60")
var.append((oid, val))
oid = (1, 3, 6, 1, 4, 1, 3902, 2, 2, 6)
val = pMod.OctetString(now_time)
var.append((oid, val))
pMod.apiTrapPDU.setVarBinds(trapPDU, var)
trapMsg = pMod.Message()
pMod.apiMessage.setDefaults(trapMsg)
pMod.apiMessage.setCommunity(trapMsg, 'Beijing JiaoTong University')
pMod.apiMessage.setPDU(trapMsg, trapPDU)
transportDispatcher = AsynsockDispatcher()
transportDispatcher.registerTransport(
udp.domainName,
udp.UdpSocketTransport().openClientMode())
transportDispatcher.sendMessage(encoder.encode(trapMsg),
udp.domainName,
(ntp_ip2, 162)) # 为对应trapserver的IP地址。
transportDispatcher.runDispatcher()
transportDispatcher.closeDispatcher()
except:
logging.debug('snmp send fail!')
print('snmp send fail')
def start(self):
transportDispatcher = AsynsockDispatcher()
transportDispatcher.registerRecvCbFun(self._event_handle)
if self.ipv4_addr:
transportDispatcher.registerTransport(
udp.domainName,
udp.UdpSocketTransport().openServerMode(
(str(self.ipv4_addr), self.port)))
if self.ipv6_addr:
transportDispatcher.registerTransport(
udp6.domainName,
udp6.Udp6SocketTransport().openServerMode(
(str(self.ipv6_addr), self.port)))
transportDispatcher.jobStarted(1)
try:
# Dispatcher will never finish as job#1 never reaches zero
transportDispatcher.runDispatcher()
except:
transportDispatcher.closeDispatcher()
raise
def run(self):
transportDispatcher = AsynsockDispatcher()
transportDispatcher.registerRecvCbFun(trapCallback)
if self.ipv6:
transport = udp.Udp6SocketTransport()
domainName = udp6.domainName
else:
transport = udp.UdpSocketTransport()
domainName = udp.domainName
try:
transportDispatcher.registerTransport(domainName, transport.openServerMode((self.host, self.port)))
transportDispatcher.jobStarted(1)
# Dispatcher will never finish as job#1 never reaches zero
transportDispatcher.runDispatcher()
except: # catch *all* exceptions
e = sys.exc_info()[1]
transportDispatcher.closeDispatcher()
logging.error("Failed to register transport and run dispatcher: %s" % str(e))
sys.exit(1)
def main():
signal.signal(signal.SIGINT, signal_handler)
signal.signal(signal.SIGTERM, signal_handler)
# global
global myamqp, transportDispatcher
# Connect to amqp bus
logger.debug("Start AMQP ...")
myamqp = camqp()
logger.info("Load all MIBs ...")
for oid in snmp2amqp_conf.mibs.keys():
mibs[oid] = mib(snmp2amqp_conf.mibs[oid])
logger.info("Init SNMP listenner ...")
transportDispatcher = AsynsockDispatcher()
transportDispatcher.registerTransport(
udp.domainName,
udp.UdpSocketTransport().openServerMode(
(snmp2amqp_conf.interface, snmp2amqp_conf.port)))
transportDispatcher.registerRecvCbFun(cbFun)
transportDispatcher.jobStarted(1) # this job would never finish
## set euid of process
os.setuid(getpwnam('canopsis')[2])
myamqp.start()
logger.info("Wait SNMP traps ...")
try:
transportDispatcher.runDispatcher()
except Exception, err:
## Impossible to stop transportDispatcher properly ...
logger.error(err)
pass
def main():
signal.signal(signal.SIGINT, signal_handler)
signal.signal(signal.SIGTERM, signal_handler)
# global
global myamqp, transportDispatcher
# Connect to amqp bus
logger.debug("Start AMQP ...")
myamqp = camqp()
logger.info("Load all MIBs ...")
for oid in snmp2amqp_conf.mibs.keys():
mibs[oid] = mib(snmp2amqp_conf.mibs[oid])
logger.info("Init SNMP listenner ...")
transportDispatcher = AsynsockDispatcher()
transportDispatcher.registerTransport(
udp.domainName, udp.UdpSocketTransport().openServerMode((snmp2amqp_conf.interface, snmp2amqp_conf.port))
)
transportDispatcher.registerRecvCbFun(cbFun)
transportDispatcher.jobStarted(1) # this job would never finish
## set euid of process
os.setuid(getpwnam('canopsis')[2])
myamqp.start()
logger.info("Wait SNMP traps ...")
try:
transportDispatcher.runDispatcher()
except Exception, err:
## Impossible to stop transportDispatcher properly ...
logger.error(err)
pass
class TrapReceiver():
def __init__(self, conf={}):
if conf is None or any(conf) == False:
self.__conf = OpenClosProperty(appName=moduleName).getProperties()
else:
self.__conf = conf
# default value
self.target = DEFAULT_HOST
self.port = DEFAULT_PORT
# validate required parameter
if 'snmpTrap' in self.__conf and 'openclos_trap_group' in self.__conf[
'snmpTrap'] and 'target' in self.__conf['snmpTrap'][
'openclos_trap_group']:
self.target = self.__conf['snmpTrap']['openclos_trap_group'][
'target']
else:
logger.info(
"snmpTrap:openclos_trap_group:target is missing from configuration. using %s"
% (self.target))
if 'snmpTrap' in self.__conf and 'openclos_trap_group' in self.__conf[
'snmpTrap'] and 'port' in self.__conf['snmpTrap'][
'openclos_trap_group']:
self.port = int(
self.__conf['snmpTrap']['openclos_trap_group']['port'])
else:
logger.info(
"snmpTrap:openclos_trap_group:port is missing from configuration. using %d"
% (self.port))
if 'snmpTrap' in self.__conf and 'threadCount' in self.__conf[
'snmpTrap']:
self.executor = concurrent.futures.ThreadPoolExecutor(
max_workers=self.__conf['snmpTrap']['threadCount'])
else:
self.executor = concurrent.futures.ThreadPoolExecutor(
max_workers=DEFAULT_MAX_THREADS)
# event to stop from sleep
self.stopEvent = Event()
self.twoStageConfigurationCallback = util.getTwoStageConfigurationCallback(
self.__conf)
def threadFunction(self):
self.transportDispatcher = AsynsockDispatcher()
self.transportDispatcher.registerRecvCbFun(onTrap)
# UDP/IPv4
self.transportDispatcher.registerTransport(
udp.domainName,
udp.UdpSocketTransport().openServerMode((self.target, self.port)))
self.transportDispatcher.jobStarted(1)
try:
# Dispatcher will never finish as job#1 never reaches zero
self.transportDispatcher.runDispatcher()
except Exception as exc:
logger.error("Encounted error '%s' on trap receiver %s:%d" %
(exc, self.target, self.port))
self.transportDispatcher.closeDispatcher()
raise TrapDaemonError(
"Trap receiver %s:%d" % (self.target, self.port), exc)
else:
self.transportDispatcher.closeDispatcher()
def start(self):
logger.info("Starting trap receiver...")
self.thread = Thread(target=self.threadFunction, args=())
self.thread.start()
logger.info("Trap receiver started on %s:%d" %
(self.target, self.port))
def stop(self):
logger.info("Stopping trap receiver...")
self.stopEvent.set()
self.executor.shutdown()
self.transportDispatcher.jobFinished(1)
self.thread.join()
logger.info("Trap receiver stopped")
)
)
print('Uptime: %s' % (
pMod.apiTrapPDU.getTimeStamp(reqPDU).prettyPrint()
)
)
varBinds = pMod.apiTrapPDU.getVarBindList(reqPDU)
else:
varBinds = pMod.apiPDU.getVarBindList(reqPDU)
print('Var-binds:')
for oid, val in varBinds:
print('%s = %s' % (oid.prettyPrint(), val.prettyPrint()))#打印具体的Trap信息内容
return wholeMsg
transportDispatcher = AsynsockDispatcher()#创建实例
transportDispatcher.registerRecvCbFun(cbFun)#调用处理Trap信息的函数
# UDP/IPv4
transportDispatcher.registerTransport(
udp.domainName, udp.UdpSocketTransport().openServerMode(('202.100.1.138', 162))#绑定到本地地址与UDP/162号端口
)
transportDispatcher.jobStarted(1)#开始工作
try:
# Dispatcher will never finish as job#1 never reaches zero
transportDispatcher.runDispatcher()#运行
except:
transportDispatcher.closeDispatcher()
raise
class TrapReceiver:
def __init__(self, rcv_ip, box_ip, event_name, port=162, inform=None):
self.rcvr_ip = rcv_ip
self.port = port
self.box_ip = box_ip
self.event_name = event_name
self.gen_trap = GenerateTrap(self.box_ip)
self.inform = inform
def cbFun(self, transportDispatcher, transportDomain,
cbCtx, wholeMsg, ):
print "cbCtx :", cbCtx
msgVer = int(api.decodeMessageVersion(wholeMsg))
#print "Inisde CB FUN..."
print 'Inside CB FUN....'
if msgVer in api.protoModules:
pMod = api.protoModules[msgVer]
else:
print('Unsupported SNMP version %s' % msgVer)
#return
reqMsg, wholeMsg = decoder.decode(
wholeMsg, asn1Spec=pMod.Message(),
)
self.req = reqMsg
print 'Type :', type(self.req)
print 'Inform :', self.inform
if self.inform:
print 'Inside Inform IF........'
if not 'InformRequestPDU()' in str(self.req):
print 'Inform Message is not sent....failed...'
print 'reqMsg : %s' % self.req
#print 'wholeMsg : %s' % wholeMsg
#print('Notification message from %s:%s: ' % (
# transportDomain, transportAddress
# )
#)
reqPDU = pMod.apiMessage.getPDU(reqMsg)
print ',,,,reqPDU : %s' % reqPDU
varBinds = pMod.apiPDU.getVarBindList(reqPDU)
#transportDispatcher.jobFinished(1)
self.terminationRequestedFlag = True
if msgVer == api.protoVersion1:
self.varBinds = pMod.apiTrapPDU.getVarBindList(reqPDU)
self.specificTrap = pMod.apiTrapPDU.getSpecificTrap(reqPDU).prettyPrint()
self.version = 1
if msgVer == api.protoVersion2c:
self.varBinds = pMod.apiPDU.getVarBindList(reqPDU)
self.specificTrap = None
self.version = 2
def timerCb(self, timeNow=10):
print "Inside Timer CB..."
if self.terminationRequestedFlag:
print "Finishing the Job..."
self.transportDispatcher.jobFinished(1)
else:
self.terminationRequestedFlag = True
def trap_listener(self):
#print "RECEIVER IP:", self.rcvr_ip
self.transportDispatcher = AsynsockDispatcher()
self.terminationRequestedFlag = False
#print "TER FLAG:", self.terminationRequestedFlag
self.transportDispatcher.registerRecvCbFun(self.cbFun)
self.transportDispatcher.registerTimerCbFun(self.timerCb)
self.transportDispatcher.registerTransport(udp.domainName,
udp.UdpSocketTransport().openServerMode(("%s" % self.rcvr_ip, 162))
)
#time.sleep(1)
# Generate the trap for the given Event.
self.gen_trap.generate_trap(self.event_name)
self.transportDispatcher.jobStarted(1)
print "Run Dispatcher...."
self.transportDispatcher.runDispatcher()
print "Close Dispatcher...."
self.transportDispatcher.closeDispatcher()
print "\n"
#print "varBinds : ", self.varBinds
#print "Version : ", self.version
#print "specificTrap : ", self.specificTrap
return self.varBinds, self.specificTrap, self.version
class SnmpdThread(threading.Thread):
"""This thread is started at configuration time from the
`mail:queuedDelivery` directive handler.
this thread will handle all the incomming snmptraps
"""
implements(IDataManager)
database = None
log = logging.getLogger("SnmpdThread")
__stopped = False
def __init__(self):
self.log.info("started (org)")
# Use the default thread transaction manager.
try:
self.transaction_manager = transaction.manager
self.interaction = ParanoidSecurityPolicy(SystemSnmpdParticipation())
self.transportDispatcher = AsynsockDispatcher()
self.transportDispatcher.registerTransport(
# udp.domainName, udp.UdpSocketTransport().openServerMode(('localhost', 162))
udp.domainName, udp.UdpSocketTransport().openServerMode(('', 11162))
)
self.transportDispatcher.registerRecvCbFun(self.cbFun)
self.transportDispatcher.jobStarted(1) # this job would never finish
except:
# TODO: don't do this
pass
threading.Thread.__init__(self)
def run(self, forever=True):
""" forever loop which will run the snmptrapd dispatcher """
atexit.register(self.stop)
while not self.__stopped:
if self.transportDispatcher is not None:
self.transportDispatcher.runDispatcher()
if forever:
time.sleep(1)
else:
break
def stop(self):
""" stop the displatcher """
self.log.info("stopped (org)")
self.__stopped = True
def cbFun(self, transportDispatcher, transportDomain, transportAddress, wholeMsg):
""" this callback function which will handle the snmptrap message from pysnmp stack """
while wholeMsg:
msgVer = int(api.decodeMessageVersion(wholeMsg))
if api.protoModules.has_key(msgVer):
pMod = api.protoModules[msgVer]
else:
print 'Unsupported SNMP version %s' % msgVer
return
reqMsg, wholeMsg = decoder.decode(
wholeMsg, asn1Spec=pMod.Message(),
)
print 'Notification message from %s:%s: ' % (
transportDomain, transportAddress
)
reqPDU = pMod.apiMessage.getPDU(reqMsg)
if reqPDU.isSameTypeWith(pMod.TrapPDU()):
if SnmpdThread.database:
conn = SnmpdThread.database.open()
root = conn.root()
root_folder = root['Application']
old_site = getSite()
setSite(root_folder)
my_catalog = zapi.getUtility(ICatalog)
search_ip = pMod.apiTrapPDU.getAgentAddr(reqPDU).prettyPrint()
search_ip_conv = convertIpV4(search_ip)
for result in my_catalog.searchResults(\
interface_ip_index=search_ip_conv):
parentObj = result.__parent__
snmpAdapter = ISnmptrapd(parentObj)
snmpAdapter.triggered(reqPDU, msgVer, pMod)
setSite(old_site)
transaction.commit()
conn.close()
return wholeMsg
class SNMPProcess(threading_tools.process_obj):
def __init__(self, name, conf_dict, **kwargs):
self.__snmp_name = name
self.__log_name, self.__log_destination = (
conf_dict["LOG_NAME"],
conf_dict["LOG_DESTINATION"],
)
self.__verbose = conf_dict.get("VERBOSE", False)
self.debug_zmq = conf_dict.get("DEBUG_ZMQ", False)
threading_tools.process_obj.__init__(self, name, busy_loop=True)
if kwargs.get("ignore_signals", False):
signal.signal(signal.SIGTERM, signal.SIG_IGN)
def process_init(self):
self.__log_template = logging_tools.get_logger(
self.__log_name,
self.__log_destination,
zmq=True,
context=self.zmq_context)
self.__return_proc_name = None
self.register_func("fetch_snmp", self._fetch_snmp)
self.register_func("register_return", self._register_return)
self.register_func("trigger_timeout", self._trigger_timeout)
self._init_dispatcher()
self.__job_dict = {}
self.__envelope_dict = {}
self.__req_id_lut = {}
def log(self, what, log_level=logging_tools.LOG_LEVEL_OK):
self.__log_template.log(log_level, what)
def _init_dispatcher(self):
self.log("init snmp_session object")
self.__disp = AsynsockDispatcher()
self.__disp.registerTransport(
udp.domainName,
udp.UdpSocketTransport().openClientMode())
self.__disp.registerRecvCbFun(self._recv_func)
self.__disp.registerTimerCbFun(self._timer_func)
self.v1_decoder = api.protoModules[api.protoVersion1]
self.v2c_decoder = api.protoModules[api.protoVersion2c]
def register_batch(self, cur_batch):
if self.__verbose > 3:
self.log("registered new batch {:d}".format(cur_batch.key))
self.__job_dict[cur_batch.key] = cur_batch
self.__disp.jobStarted(cur_batch.key)
def unregister_batch(self, cur_batch):
# ids we will no longer handle because of finish
to_keys = [
key for key, value in self.__req_id_lut.iteritems()
if value == cur_batch
]
if to_keys:
for to_key in to_keys:
del self.__req_id_lut[to_key]
if self.__verbose > 3:
cur_batch.log(
"removed {} for batch {}".format(
logging_tools.get_plural("request ID", len(to_keys)),
cur_batch,
), )
del self.__job_dict[cur_batch.key]
del self.__envelope_dict[cur_batch.envelope]
self.__disp.jobFinished(cur_batch.key)
def loop(self):
try:
while self["run_flag"]:
self.__disp.runDispatcher()
self.step(blocking=self["run_flag"])
except ValueConstraintError:
self.log("caught ValueConstraintError, terminating process",
logging_tools.LOG_LEVEL_CRITICAL)
_term_cause = "ValueConstraintError"
except:
exc_info = process_tools.exception_info()
self.log("exception in dispatcher, terminating process",
logging_tools.LOG_LEVEL_CRITICAL)
for log_line in exc_info.log_lines:
self.log(" - {}".format(log_line),
logging_tools.LOG_LEVEL_CRITICAL)
_term_cause = "internal error"
else:
self.log("no more jobs running")
_term_cause = ""
self.log("jobs pending: {:d}".format(len(self.__job_dict)))
# close all jobs
if _term_cause:
self._terminate_jobs(error="{}, check logs".format(_term_cause))
else:
self._terminate_jobs()
self.__disp.closeDispatcher()
def _inject(self, cur_batch):
try:
next_tuple = cur_batch.iterator.next()
except StopIteration:
cur_batch.finish()
else:
self.send_next(cur_batch, next_tuple)
def send_next(self, cur_batch, next_tuple):
self.__req_id_lut[cur_batch.request_id] = cur_batch
self.__disp.sendMessage(*next_tuple)
def _register_return(self, proc_name, **kwargs):
self.__return_proc_name = proc_name
self.send_pool_message("hellox",
"hello2",
"hello3",
target=self.__return_proc_name)
def _fetch_snmp(self, *scheme_data, **kwargs):
new_batch = SNMPBatch(self,
*scheme_data,
verbose=self.__verbose,
**kwargs)
self.__envelope_dict[new_batch.envelope] = new_batch
self._inject(new_batch)
def _trigger_timeout(self, *args, **kwargs):
batch_id = args[0]
if batch_id in self.__envelope_dict:
self.log("triggering timeout for batch_id {}".format(batch_id),
logging_tools.LOG_LEVEL_WARN)
self.__envelope_dict[batch_id].trigger_timeout()
else:
self.log("unknown batch_id {}".format(batch_id),
logging_tools.LOG_LEVEL_ERROR)
def _timer_func(self, act_time):
timed_out = [
key for key, cur_job in self.__job_dict.iteritems()
if cur_job.timer_func(act_time)
]
for to_key in timed_out:
self.__job_dict[to_key].finish()
self.step()
if self["exit_requested"]:
self._terminate_jobs(error="exit requested")
def _terminate_jobs(self, **kwargs):
_stop_keys = set(self.__job_dict.keys())
for _key in _stop_keys:
if "error" in kwargs:
self.__job_dict[_key].add_error(kwargs["error"])
self.__job_dict[_key].finish()
def _recv_func(self, disp, domain, address, whole_msg):
while whole_msg:
# rsp_msg, whole_msg = decoder.decode(whole_msg, asn1Spec=self.__p_mod.Message())
try:
rsp_msg, whole_msg = decoder.decode(
whole_msg, asn1Spec=self.v2c_decoder.Message())
except:
self.log(
"error decoding message from {}: {}".format(
address, process_tools.get_except_info()),
logging_tools.LOG_LEVEL_CRITICAL)
# send meaningfull error message to client ? TODO, FIXME
whole_msg = None
else:
# rsp_pdu = self.__p_mod.apiMessage.getPDU(rsp_msg)
rsp_pdu = self.v2c_decoder.apiMessage.getPDU(rsp_msg)
cur_id = self.v2c_decoder.apiPDU.getRequestID(rsp_pdu)
if cur_id in self.__req_id_lut:
self.__req_id_lut[cur_id].feed_pdu(disp, domain, address,
rsp_pdu)
else:
self.log("id {} in response not known".format(cur_id))
if cur_id in self.__req_id_lut:
del self.__req_id_lut[cur_id]
return whole_msg
def loop_post(self):
self.__log_template.close()
def send_return(self, envelope, error_list, received, snmp):
self.send_pool_message("snmp_finished",
envelope,
error_list,
received,
snmp,
target=self.__return_proc_name
or DEFAULT_RETURN_NAME)
class SnmpServer(threading.Thread):
def __init__(self, address):
threading.Thread.__init__(self)
self._address = address
self._transportDispatcher = AsynsockDispatcher()
self._transportDispatcher.registerRecvCbFun(self.onSnmpMessage)
def run(self):
self._transportDispatcher.registerTransport(
udp.domainName,
udp.UdpSocketTransport().openServerMode(self._address))
getLogger().info("Now listening on %s:%s" % self._address)
self._transportDispatcher.jobStarted(1)
try:
self._transportDispatcher.runDispatcher(timeout=1)
except Exception as e:
getLogger().error(u"Error while handling an SNMP message: %s" %
unicode(e))
def stop(self):
self._transportDispatcher.jobFinished(1)
self._transportDispatcher.closeDispatcher()
self.join()
# Main handler, called when receiving an SNMP request
def onSnmpMessage(self, transportDispatcher, transportDomain,
transportAddress, wholeMsg):
while wholeMsg:
msgVer = api.decodeMessageVersion(wholeMsg)
if api.protoModules.has_key(msgVer):
pMod = api.protoModules[msgVer]
else:
getLogger().error('Unsupported SNMP version %s' % msgVer)
return
reqMsg, wholeMsg = decoder.decode(
wholeMsg,
asn1Spec=pMod.Message(),
)
rspMsg = pMod.apiMessage.getResponse(reqMsg)
rspPDU = pMod.apiMessage.getPDU(rspMsg)
reqPDU = pMod.apiMessage.getPDU(reqMsg)
varBinds = []
errorIndex = -1
# GET request
if reqPDU.isSameTypeWith(pMod.GetRequestPDU()):
getLogger().info("SNMP GET received...")
for oid, val in pMod.apiPDU.getVarBinds(reqPDU):
getLogger().debug("Trying to GET %s... " %
oidToString(oid))
if mibVariablesByOid.has_key(oid):
varBinds.append((oid, mibVariablesByOid[oid](msgVer)))
else:
# No such instance
pMod.apiPDU.setNoSuchInstanceError(rspPDU, errorIndex)
varBinds = pMod.apiPDU.getVarBinds(reqPDU)
break
# GET-NEXT request
elif reqPDU.isSameTypeWith(pMod.GetNextRequestPDU()):
getLogger().info("SNMP GET-NEXT received...")
# Produce response var-binds
errorIndex = -1
for oid, val in pMod.apiPDU.getVarBinds(reqPDU):
getLogger().debug("Trying to GET-NEXT %s... " %
oidToString(oid))
errorIndex = errorIndex + 1
# Search next OID to report
nextIdx = bisect.bisect(mibVariables, oid)
if nextIdx == len(mibVariables):
# Out of MIB
pMod.apiPDU.setEndOfMibError(rspPDU, errorIndex)
else:
# Report value if OID is found
varBinds.append((mibVariables[nextIdx].oid,
mibVariables[nextIdx](msgVer)))
else:
getLogger().error("Unsupported SNMP request received...")
# Report unsupported request type
pMod.apiPDU.setErrorStatus(
rspPDU, -1) # we should use something different from -1
pMod.apiPDU.setVarBinds(rspPDU, varBinds)
transportDispatcher.sendMessage(encoder.encode(rspMsg),
transportDomain, transportAddress)
return wholeMsg
class Agent(object):
def __init__(self, host, port):
self._mibInstr = []
self._mibInstrIdx = {}
self._transportDispatcher = AsynsockDispatcher()
self.host = host
self.port = port
def prepare(self):
address = (self.host, self.port)
transportDispatcher = self._transportDispatcher
transportDispatcher.registerTransport(udp.domainName, udp.UdpSocketTransport().openServerMode(address))
transportDispatcher.registerRecvCbFun(self.cbFun)
transportDispatcher.jobStarted(1)
def start(self):
try:
self._transportDispatcher.runDispatcher()
except select.error:
pass
def stop(self):
self._transportDispatcher.closeDispatcher()
def registerInstr(self, instr):
assert callable(instr)
self._mibInstr.append(instr)
self._mibInstrIdx[instr.name] = instr
def cbFun(self, transportDispatcher, transportDomain, transportAddress, wholeMsg):
mibInstr = self._mibInstr
mibInstrIdx = self._mibInstrIdx
while wholeMsg:
msgVer = api.decodeMessageVersion(wholeMsg)
if msgVer in api.protoModules:
pMod = api.protoModules[msgVer]
else:
return
reqMsg, wholeMsg = decoder.decode(wholeMsg, asn1Spec=pMod.Message())
rspMsg = pMod.apiMessage.getResponse(reqMsg)
rspPDU = pMod.apiMessage.getPDU(rspMsg)
reqPDU = pMod.apiMessage.getPDU(reqMsg)
varBinds = []
errorIndex = -1
# GETNEXT PDU
if reqPDU.isSameTypeWith(pMod.GetNextRequestPDU()):
# Produce response var-binds
errorIndex = -1
for oid, val in pMod.apiPDU.getVarBinds(reqPDU):
errorIndex = errorIndex + 1
# Search next OID to report
nextIdx = bisect.bisect(mibInstr, oid)
if nextIdx == len(mibInstr):
# Out of MIB
pMod.apiPDU.setEndOfMibError(rspPDU, errorIndex)
else:
# Report value if OID is found
varBinds.append((mibInstr[nextIdx].name, mibInstr[nextIdx](msgVer)))
elif reqPDU.isSameTypeWith(pMod.GetRequestPDU()):
for oid, val in pMod.apiPDU.getVarBinds(reqPDU):
if oid in mibInstrIdx:
varBinds.append((oid, mibInstrIdx[oid](msgVer)))
else:
# No such instance
try:
pMod.apiPDU.setNoSuchInstanceError(rspPDU, errorIndex)
except IndexError:
pass
varBinds = pMod.apiPDU.getVarBinds(reqPDU)
break
else:
# Report unsupported request type
pMod.apiPDU.setErrorStatus(rspPDU, "genErr")
pMod.apiPDU.setVarBinds(rspPDU, varBinds)
transportDispatcher.sendMessage(encoder.encode(rspMsg), transportDomain, transportAddress)
return wholeMsg
def update(self):
"""Called by the processing thread to trigger an update of the data"""
ip = self._ip
hostname = self._hostname
# Grab the lock
lock = self.lock
lock.acquire()
try:
# Retrieve locally available information
self.activeRevision = getActiveRevision(hostname)
self.generatedRevision = getGeneratedRevision(self._hostname)
# Check that the host is reachable
if not isHostUp(ip):
self.reachable = False
self.lastCheckedAt = time.time()
self.attempt+=1
return
self.reachable = True
# Retrieve host status information
pMod = api.protoModules[api.protoVersion1]
reqPDU = pMod.GetRequestPDU()
pMod.apiPDU.setDefaults(reqPDU)
pMod.apiPDU.setVarBinds(
reqPDU, ((CCS_REVISION_OID, pMod.Null()),
(LOAD_AVG1_OID, pMod.Null()),
(LOAD_AVG5_OID, pMod.Null()),
(LOAD_AVG15_OID, pMod.Null()),
(UPTIME_OID, pMod.Null())
)
)
# Build message
reqMsg = pMod.Message()
pMod.apiMessage.setDefaults(reqMsg)
pMod.apiMessage.setCommunity(reqMsg, 'public')
pMod.apiMessage.setPDU(reqMsg, reqPDU)
# Dispatch Request
transportDispatcher = AsynsockDispatcher()
transportDispatcher.registerTransport(
udp.domainName, udp.UdpSocketTransport().openClientMode()
)
startedAt = time.time()
def cbTimerFun(timeNow):
if timeNow - startedAt > 3:
transportDispatcher.jobFinished(1)
transportDispatcher.closeDispatcher()
self.attempt+=1
log_warn("Timeout fetching status from %s. Attempt #%s" %
(hostname, self.attempt))
def cbRecvFun(transportDispatcher, transportDomain, \
transportAddress, wholeMsg, reqPDU=reqPDU):
while wholeMsg:
rspMsg, wholeMsg = decoder.decode(wholeMsg, \
asn1Spec=pMod.Message())
rspPDU = pMod.apiMessage.getPDU(rspMsg)
# Match response to request
if pMod.apiPDU.getRequestID(reqPDU) == \
pMod.apiPDU.getRequestID(rspPDU):
# Check for SNMP errors reported
errorStatus = pMod.apiPDU.getErrorStatus(rspPDU)
if errorStatus:
transportDispatcher.jobFinished(1)
transportDispatcher.closeDispatcher()
raise ccs_status_error(errorStatus.prettyPrint())
else:
la1 = 0
la5 = 0
la15 = 0
for oid, val in pMod.apiPDU.getVarBinds(rspPDU):
if oid == CCS_REVISION_OID:
self.operatingRevision = str(val)
self._parseOperatingRevision()
elif oid == LOAD_AVG1_OID:
la1 = val
elif oid == LOAD_AVG5_OID:
la5 = val
elif oid == LOAD_AVG15_OID:
la15 = val
elif oid == UPTIME_OID:
self.uptime = val
self.currentLoad = (la1, la5, la15)
transportDispatcher.jobFinished(1)
self.attempt = 0
return wholeMsg
transportDispatcher.registerRecvCbFun(cbRecvFun)
transportDispatcher.registerTimerCbFun(cbTimerFun)
transportDispatcher.sendMessage(
encoder.encode(reqMsg), udp.domainName, (ip, 161)
)
transportDispatcher.jobStarted(1)
transportDispatcher.runDispatcher()
transportDispatcher.closeDispatcher()
# Record that the details were updated
self.infoUpdatedAt = time.time()
self.lastCheckedAt = time.time()
finally:
lock.release()
def main():
class CommandResponder(cmdrsp.CommandResponderBase):
pduTypes = (rfc1905.SetRequestPDU.tagSet, rfc1905.GetRequestPDU.tagSet,
rfc1905.GetNextRequestPDU.tagSet,
rfc1905.GetBulkRequestPDU.tagSet)
def handleMgmtOperation(self, snmpEngine, stateReference, contextName,
pdu, acInfo):
trunkReq = gCurrentRequestContext.copy()
trunkReq['snmp-pdu'] = pdu
pluginIdList = trunkReq['plugins-list']
logCtx = LogString(trunkReq)
reqCtx = {}
for pluginNum, pluginId in enumerate(pluginIdList):
st, pdu = pluginManager.processCommandRequest(
pluginId, snmpEngine, pdu, trunkReq, reqCtx)
if st == status.BREAK:
log.debug('plugin %s inhibits other plugins' % pluginId,
ctx=logCtx)
pluginIdList = pluginIdList[:pluginNum]
break
elif st == status.DROP:
log.debug(
'received SNMP message, plugin %s muted request' %
pluginId,
ctx=logCtx)
self.releaseStateInformation(stateReference)
return
elif st == status.RESPOND:
log.debug(
'received SNMP message, plugin %s forced immediate response'
% pluginId,
ctx=logCtx)
try:
self.sendPdu(snmpEngine, stateReference, pdu)
except PySnmpError:
log.error('failure sending SNMP response', ctx=logCtx)
else:
self.releaseStateInformation(stateReference)
return
# pass query to trunk
trunkIdList = trunkReq['trunk-id-list']
if trunkIdList is None:
log.error('no route configured', ctx=logCtx)
self.releaseStateInformation(stateReference)
return
for trunkId in trunkIdList:
cbCtx = pluginIdList, trunkId, trunkReq, snmpEngine, stateReference, reqCtx
try:
msgId = trunkingManager.sendReq(trunkId, trunkReq,
self.trunkCbFun, cbCtx)
except SnmpfwdError:
log.error(
'received SNMP message, message not sent to trunk "%s"'
% sys.exc_info()[1],
ctx=logCtx)
return
log.debug(
'received SNMP message, forwarded as trunk message #%s' %
msgId,
ctx=logCtx)
def trunkCbFun(self, msgId, trunkRsp, cbCtx):
pluginIdList, trunkId, trunkReq, snmpEngine, stateReference, reqCtx = cbCtx
for key in tuple(trunkRsp):
if key != 'callflow-id':
trunkRsp['client-' + key] = trunkRsp[key]
del trunkRsp[key]
trunkRsp['callflow-id'] = trunkReq['callflow-id']
logCtx = LogString(trunkRsp)
if trunkRsp['client-error-indication']:
log.info(
'received trunk message #%s, remote end reported error-indication "%s", NOT responding'
% (msgId, trunkRsp['client-error-indication']),
ctx=logCtx)
elif 'client-snmp-pdu' not in trunkRsp:
log.info(
'received trunk message #%s, remote end does not send SNMP PDU, NOT responding'
% msgId,
ctx=logCtx)
else:
pdu = trunkRsp['client-snmp-pdu']
for pluginId in pluginIdList:
st, pdu = pluginManager.processCommandResponse(
pluginId, snmpEngine, pdu, trunkReq, reqCtx)
if st == status.BREAK:
log.debug('plugin %s inhibits other plugins' %
pluginId,
ctx=logCtx)
break
elif st == status.DROP:
log.debug('plugin %s muted response' % pluginId,
ctx=logCtx)
self.releaseStateInformation(stateReference)
return
try:
self.sendPdu(snmpEngine, stateReference, pdu)
except PySnmpError:
log.error('failure sending SNMP response', ctx=logCtx)
else:
log.debug(
'received trunk message #%s, forwarded as SNMP message'
% msgId,
ctx=logCtx)
self.releaseStateInformation(stateReference)
#
# SNMPv3 NotificationReceiver implementation
#
class NotificationReceiver(ntfrcv.NotificationReceiver):
pduTypes = (rfc1157.TrapPDU.tagSet, rfc1905.SNMPv2TrapPDU.tagSet)
def processPdu(self, snmpEngine, messageProcessingModel, securityModel,
securityName, securityLevel, contextEngineId,
contextName, pduVersion, pdu, maxSizeResponseScopedPDU,
stateReference):
trunkReq = gCurrentRequestContext.copy()
if messageProcessingModel == 0:
pdu = rfc2576.v1ToV2(pdu)
# TODO: why this is not automatic?
v2c.apiTrapPDU.setDefaults(pdu)
trunkReq['snmp-pdu'] = pdu
pluginIdList = trunkReq['plugins-list']
logCtx = LogString(trunkReq)
reqCtx = {}
for pluginNum, pluginId in enumerate(pluginIdList):
st, pdu = pluginManager.processNotificationRequest(
pluginId, snmpEngine, pdu, trunkReq, reqCtx)
if st == status.BREAK:
log.debug('plugin %s inhibits other plugins' % pluginId,
ctx=logCtx)
pluginIdList = pluginIdList[:pluginNum]
break
elif st == status.DROP:
log.debug('plugin %s muted request' % pluginId, ctx=logCtx)
return
elif st == status.RESPOND:
log.debug('plugin %s NOT forced immediate response' %
pluginId,
ctx=logCtx)
# TODO: implement immediate response for confirmed-class PDU
return
# pass query to trunk
trunkIdList = trunkReq['trunk-id-list']
if trunkIdList is None:
log.error('no route configured', ctx=logCtx)
return
for trunkId in trunkIdList:
# TODO: pass messageProcessingModel to respond
cbCtx = pluginIdList, trunkId, trunkReq, snmpEngine, stateReference, reqCtx
try:
msgId = trunkingManager.sendReq(trunkId, trunkReq,
self.trunkCbFun, cbCtx)
except SnmpfwdError:
log.error(
'received SNMP message, message not sent to trunk "%s" %s'
% (trunkId, sys.exc_info()[1]),
ctx=logCtx)
return
log.debug(
'received SNMP message, forwarded as trunk message #%s' %
msgId,
ctx=logCtx)
def trunkCbFun(self, msgId, trunkRsp, cbCtx):
pluginIdList, trunkId, trunkReq, snmpEngine, stateReference, reqCtx = cbCtx
for key in tuple(trunkRsp):
if key != 'callflow-id':
trunkRsp['client-' + key] = trunkRsp[key]
del trunkRsp[key]
trunkRsp['callflow-id'] = trunkReq['callflow-id']
logCtx = LazyLogString(trunkReq, trunkRsp)
if trunkRsp['client-error-indication']:
log.info(
'received trunk message #%s, remote end reported error-indication "%s", NOT responding'
% (msgId, trunkRsp['client-error-indication']),
ctx=logCtx)
else:
if 'client-snmp-pdu' not in trunkRsp:
log.debug(
'received trunk message #%s -- unconfirmed SNMP message'
% msgId,
ctx=logCtx)
return
pdu = trunkRsp['client-snmp-pdu']
for pluginId in pluginIdList:
st, pdu = pluginManager.processNotificationResponse(
pluginId, snmpEngine, pdu, trunkReq, reqCtx)
if st == status.BREAK:
log.debug('plugin %s inhibits other plugins' %
pluginId,
ctx=logCtx)
break
elif st == status.DROP:
log.debug(
'received trunk message #%s, plugin %s muted response'
% (msgId, pluginId),
ctx=logCtx)
return
log.debug(
'received trunk message #%s, forwarded as SNMP message' %
msgId,
ctx=logCtx)
# TODO: implement response part
# # Agent-side API complies with SMIv2
# if messageProcessingModel == 0:
# PDU = rfc2576.v2ToV1(PDU, origPdu)
#
# statusInformation = {}
#
# # 3.4.3
# try:
# snmpEngine.msgAndPduDsp.returnResponsePdu(
# snmpEngine, messageProcessingModel, securityModel,
# securityName, securityLevel, contextEngineId,
# contextName, pduVersion, rspPDU, maxSizeResponseScopedPDU,
# stateReference, statusInformation)
#
# except error.StatusInformation:
# log.error('processPdu: stateReference %s, statusInformation %s' % (stateReference, sys.exc_info()[1]))
class LogString(LazyLogString):
GROUPINGS = [
['callflow-id'],
[
'snmp-engine-id', 'snmp-transport-domain', 'snmp-bind-address',
'snmp-bind-port', 'snmp-security-model', 'snmp-security-level',
'snmp-security-name', 'snmp-credentials-id'
],
['snmp-context-engine-id', 'snmp-context-name', 'snmp-context-id'],
['snmp-pdu', 'snmp-content-id'],
['snmp-peer-address', 'snmp-peer-port', 'snmp-peer-id'],
['trunk-id'],
['client-snmp-pdu'],
]
FORMATTERS = {
'client-snmp-pdu': LazyLogString.prettyVarBinds,
'snmp-pdu': LazyLogString.prettyVarBinds,
}
def securityAuditObserver(snmpEngine, execpoint, variables, cbCtx):
securityModel = variables.get('securityModel', 0)
logMsg = 'SNMPv%s auth failure' % securityModel
logMsg += ' at %s:%s' % variables['transportAddress'].getLocalAddress()
logMsg += ' from %s:%s' % variables['transportAddress']
statusInformation = variables.get('statusInformation', {})
if securityModel in (1, 2):
logMsg += ' using snmp-community-name "%s"' % statusInformation.get(
'communityName', '?')
elif securityModel == 3:
logMsg += ' using snmp-usm-user "%s"' % statusInformation.get(
'msgUserName', '?')
try:
logMsg += ': %s' % statusInformation['errorIndication']
except KeyError:
pass
log.error(logMsg)
def requestObserver(snmpEngine, execpoint, variables, cbCtx):
trunkReq = {
'callflow-id': '%10.10x' % random.randint(0, 0xffffffffff),
'snmp-engine-id': snmpEngine.snmpEngineID,
'snmp-transport-domain': variables['transportDomain'],
'snmp-peer-address': variables['transportAddress'][0],
'snmp-peer-port': variables['transportAddress'][1],
'snmp-bind-address':
variables['transportAddress'].getLocalAddress()[0],
'snmp-bind-port':
variables['transportAddress'].getLocalAddress()[1],
'snmp-security-model': variables['securityModel'],
'snmp-security-level': variables['securityLevel'],
'snmp-security-name': variables['securityName'],
'snmp-context-engine-id': variables['contextEngineId'],
'snmp-context-name': variables['contextName'],
}
trunkReq['snmp-credentials-id'] = macro.expandMacro(
credIdMap.get(
(str(snmpEngine.snmpEngineID), variables['transportDomain'],
variables['securityModel'], variables['securityLevel'],
str(variables['securityName']))), trunkReq)
k = '#'.join([
str(x)
for x in (variables['contextEngineId'], variables['contextName'])
])
for x, y in contextIdList:
if y.match(k):
trunkReq['snmp-context-id'] = macro.expandMacro(x, trunkReq)
break
else:
trunkReq['snmp-context-id'] = None
addr = '%s:%s#%s:%s' % (
variables['transportAddress'][0], variables['transportAddress'][1],
variables['transportAddress'].getLocalAddress()[0],
variables['transportAddress'].getLocalAddress()[1])
for pat, peerId in peerIdMap.get(str(variables['transportDomain']),
()):
if pat.match(addr):
trunkReq['snmp-peer-id'] = macro.expandMacro(peerId, trunkReq)
break
else:
trunkReq['snmp-peer-id'] = None
pdu = variables['pdu']
if pdu.tagSet == v1.TrapPDU.tagSet:
pdu = rfc2576.v1ToV2(pdu)
v2c.apiTrapPDU.setDefaults(pdu)
k = '#'.join([
snmpPduTypesMap.get(variables['pdu'].tagSet, '?'),
'|'.join([str(x[0]) for x in v2c.apiTrapPDU.getVarBinds(pdu)])
])
for x, y in contentIdList:
if y.match(k):
trunkReq['snmp-content-id'] = macro.expandMacro(x, trunkReq)
break
else:
trunkReq['snmp-content-id'] = None
trunkReq['plugins-list'] = pluginIdMap.get(
(trunkReq['snmp-credentials-id'], trunkReq['snmp-context-id'],
trunkReq['snmp-peer-id'], trunkReq['snmp-content-id']), [])
trunkReq['trunk-id-list'] = trunkIdMap.get(
(trunkReq['snmp-credentials-id'], trunkReq['snmp-context-id'],
trunkReq['snmp-peer-id'], trunkReq['snmp-content-id']))
cbCtx.clear()
cbCtx.update(trunkReq)
#
# main script starts here
#
helpMessage = """\
Usage: %s [--help]
[--version ]
[--debug-snmp=<%s>]
[--debug-asn1=<%s>]
[--daemonize]
[--process-user=<uname>] [--process-group=<gname>]
[--pid-file=<file>]
[--logging-method=<%s[:args>]>]
[--log-level=<%s>]
[--config-file=<file>]""" % (sys.argv[0], '|'.join([
x for x in pysnmp_debug.flagMap.keys() if x != 'mibview'
]), '|'.join([x for x in pyasn1_debug.flagMap.keys()]), '|'.join(
log.methodsMap.keys()), '|'.join(log.levelsMap))
try:
opts, params = getopt.getopt(sys.argv[1:], 'hv', [
'help', 'version', 'debug=', 'debug-snmp=', 'debug-asn1=',
'daemonize', 'process-user='******'process-group=', 'pid-file=',
'logging-method=', 'log-level=', 'config-file='
])
except Exception:
sys.stderr.write('ERROR: %s\r\n%s\r\n' %
(sys.exc_info()[1], helpMessage))
return
if params:
sys.stderr.write('ERROR: extra arguments supplied %s\r\n%s\r\n' %
(params, helpMessage))
return
pidFile = ''
cfgFile = CONFIG_FILE
foregroundFlag = True
procUser = procGroup = None
loggingMethod = ['stderr']
loggingLevel = None
for opt in opts:
if opt[0] == '-h' or opt[0] == '--help':
sys.stderr.write("""\
Synopsis:
SNMP Proxy Forwarder: server part. Receives SNMP requests at one or many
built-in SNMP Agents and routes them to encrypted trunks established with
Forwarder's Manager part(s) running elsewhere.
Can implement complex routing logic through analyzing parts of SNMP messages
and matching them against proxying rules.
Documentation:
http://snmpfwd.sourceforge.io/
%s
""" % helpMessage)
return
if opt[0] == '-v' or opt[0] == '--version':
import snmpfwd
import pysnmp
import pyasn1
sys.stderr.write("""\
SNMP Proxy Forwarder version %s, written by Ilya Etingof <*****@*****.**>
Using foundation libraries: pysnmp %s, pyasn1 %s.
Python interpreter: %s
Software documentation and support at https://github.com/etingof/snmpfwd
%s
""" % (snmpfwd.__version__, hasattr(pysnmp, '__version__')
and pysnmp.__version__ or 'unknown',
hasattr(pyasn1, '__version__') and pyasn1.__version__
or 'unknown', sys.version, helpMessage))
return
elif opt[0] == '--debug-snmp':
pysnmp_debug.setLogger(
pysnmp_debug.Debug(*opt[1].split(','),
**dict(loggerName=PROGRAM_NAME +
'.pysnmp')))
elif opt[0] == '--debug-asn1':
pyasn1_debug.setLogger(
pyasn1_debug.Debug(*opt[1].split(','),
**dict(loggerName=PROGRAM_NAME +
'.pyasn1')))
elif opt[0] == '--daemonize':
foregroundFlag = False
elif opt[0] == '--process-user':
procUser = opt[1]
elif opt[0] == '--process-group':
procGroup = opt[1]
elif opt[0] == '--pid-file':
pidFile = opt[1]
elif opt[0] == '--logging-method':
loggingMethod = opt[1].split(':')
elif opt[0] == '--log-level':
loggingLevel = opt[1]
elif opt[0] == '--config-file':
cfgFile = opt[1]
try:
log.setLogger(PROGRAM_NAME, *loggingMethod, **dict(force=True))
if loggingLevel:
log.setLevel(loggingLevel)
except SnmpfwdError:
sys.stderr.write('%s\r\n%s\r\n' % (sys.exc_info()[1], helpMessage))
return
try:
cfgTree = cparser.Config().load(cfgFile)
except SnmpfwdError:
log.error('configuration parsing error: %s' % sys.exc_info()[1])
return
if cfgTree.getAttrValue('program-name', '', default=None) != PROGRAM_NAME:
log.error('config file %s does not match program name %s' %
(cfgFile, PROGRAM_NAME))
return
if cfgTree.getAttrValue('config-version', '',
default=None) != CONFIG_VERSION:
log.error(
'config file %s version is not compatible with program version %s'
% (cfgFile, CONFIG_VERSION))
return
random.seed()
gCurrentRequestContext = {}
credIdMap = {}
peerIdMap = {}
contextIdList = []
contentIdList = []
pluginIdMap = {}
trunkIdMap = {}
engineIdMap = {}
transportDispatcher = AsynsockDispatcher()
transportDispatcher.registerRoutingCbFun(lambda td, t, d: td)
transportDispatcher.setSocketMap() # use global asyncore socket map
#
# Initialize plugin modules
#
pluginManager = PluginManager(macro.expandMacros(
cfgTree.getAttrValue('plugin-modules-path-list',
'',
default=[],
vector=True),
{'config-dir': os.path.dirname(cfgFile)}),
progId=PROGRAM_NAME,
apiVer=PLUGIN_API_VERSION)
for pluginCfgPath in cfgTree.getPathsToAttr('plugin-id'):
pluginId = cfgTree.getAttrValue('plugin-id', *pluginCfgPath)
pluginMod = cfgTree.getAttrValue('plugin-module', *pluginCfgPath)
pluginOptions = macro.expandMacros(
cfgTree.getAttrValue('plugin-options', *pluginCfgPath,
**dict(default=[], vector=True)),
{'config-dir': os.path.dirname(cfgFile)})
log.info(
'configuring plugin ID %s (at %s) from module %s with options %s...'
% (pluginId, '.'.join(pluginCfgPath), pluginMod,
', '.join(pluginOptions) or '<none>'))
try:
pluginManager.loadPlugin(pluginId, pluginMod, pluginOptions)
except SnmpfwdError:
log.error('plugin %s not loaded: %s' %
(pluginId, sys.exc_info()[1]))
return
for configEntryPath in cfgTree.getPathsToAttr('snmp-credentials-id'):
credId = cfgTree.getAttrValue('snmp-credentials-id', *configEntryPath)
configKey = []
log.info('configuring snmp-credentials %s (at %s)...' %
(credId, '.'.join(configEntryPath)))
engineId = cfgTree.getAttrValue('snmp-engine-id', *configEntryPath)
if engineId in engineIdMap:
snmpEngine, snmpContext, snmpEngineMap = engineIdMap[engineId]
log.info('using engine-id %s' %
snmpEngine.snmpEngineID.prettyPrint())
else:
snmpEngine = engine.SnmpEngine(snmpEngineID=engineId)
snmpContext = context.SnmpContext(snmpEngine)
snmpEngineMap = {'transportDomain': {}, 'securityName': {}}
snmpEngine.observer.registerObserver(
securityAuditObserver,
'rfc2576.prepareDataElements:sm-failure',
'rfc3412.prepareDataElements:sm-failure',
cbCtx=gCurrentRequestContext)
snmpEngine.observer.registerObserver(
requestObserver,
'rfc3412.receiveMessage:request',
cbCtx=gCurrentRequestContext)
CommandResponder(snmpEngine, snmpContext)
NotificationReceiver(snmpEngine, None)
engineIdMap[engineId] = snmpEngine, snmpContext, snmpEngineMap
log.info('new engine-id %s' %
snmpEngine.snmpEngineID.prettyPrint())
configKey.append(str(snmpEngine.snmpEngineID))
transportDomain = cfgTree.getAttrValue('snmp-transport-domain',
*configEntryPath)
transportDomain = rfc1902.ObjectName(transportDomain)
if transportDomain in snmpEngineMap['transportDomain']:
h, p, transportDomain = snmpEngineMap['transportDomain'][
transportDomain]
log.info('using transport endpoint %s:%s, transport ID %s' %
(h, p, transportDomain))
else:
if transportDomain[:len(udp.domainName)] == udp.domainName:
transport = udp.UdpTransport()
elif transportDomain[:len(udp6.domainName)] == udp6.domainName:
transport = udp6.Udp6Transport()
else:
log.error('unknown transport domain %s' % (transportDomain, ))
return
h, p = cfgTree.getAttrValue('snmp-bind-address',
*configEntryPath).split(':', 1)
snmpEngine.registerTransportDispatcher(transportDispatcher,
transportDomain)
transportOptions = cfgTree.getAttrValue(
'snmp-transport-options', *configEntryPath,
**dict(default=[], vector=True))
t = transport.openServerMode((h, int(p)))
if 'transparent-proxy' in transportOptions:
t.enablePktInfo()
t.enableTransparent()
elif 'virtual-interface' in transportOptions:
t.enablePktInfo()
config.addSocketTransport(snmpEngine, transportDomain, t)
snmpEngineMap['transportDomain'][
transportDomain] = h, p, transportDomain
log.info(
'new transport endpoint %s:%s, options %s, transport ID %s' %
(h, p, transportOptions and '/'.join(transportOptions)
or '<none>', transportDomain))
configKey.append(transportDomain)
securityModel = cfgTree.getAttrValue('snmp-security-model',
*configEntryPath)
securityModel = rfc1902.Integer(securityModel)
securityLevel = cfgTree.getAttrValue('snmp-security-level',
*configEntryPath)
securityLevel = rfc1902.Integer(securityLevel)
securityName = cfgTree.getAttrValue('snmp-security-name',
*configEntryPath)
if securityModel in (1, 2):
if securityName in snmpEngineMap['securityName']:
if snmpEngineMap['securityName'][
securityModel] == securityModel:
log.info('using security-name %s' % securityName)
else:
raise SnmpfwdError(
'snmp-security-name %s already in use at snmp-security-model %s'
% (securityName, securityModel))
else:
communityName = cfgTree.getAttrValue('snmp-community-name',
*configEntryPath)
config.addV1System(snmpEngine,
securityName,
communityName,
securityName=securityName)
log.info(
'new community-name %s, security-model %s, security-name %s, security-level %s'
% (communityName, securityModel, securityName,
securityLevel))
snmpEngineMap['securityName'][securityName] = securityModel
configKey.append(securityModel)
configKey.append(securityLevel)
configKey.append(securityName)
elif securityModel == 3:
if securityName in snmpEngineMap['securityName']:
log.info('using USM security-name: %s' % securityName)
else:
usmUser = cfgTree.getAttrValue('snmp-usm-user',
*configEntryPath)
log.info(
'new USM user %s, security-model %s, security-level %s, security-name %s'
% (usmUser, securityModel, securityLevel, securityName))
if securityLevel in (2, 3):
usmAuthProto = cfgTree.getAttrValue(
'snmp-usm-auth-protocol', *configEntryPath,
**dict(default=config.usmHMACMD5AuthProtocol))
usmAuthProto = rfc1902.ObjectName(usmAuthProto)
usmAuthKey = cfgTree.getAttrValue('snmp-usm-auth-key',
*configEntryPath)
log.info(
'new USM authentication key: %s, authentication protocol: %s'
% (usmAuthKey, usmAuthProto))
if securityLevel == 3:
usmPrivProto = cfgTree.getAttrValue(
'snmp-usm-priv-protocol', *configEntryPath,
**dict(default=config.usmDESPrivProtocol))
usmPrivProto = rfc1902.ObjectName(usmPrivProto)
usmPrivKey = cfgTree.getAttrValue(
'snmp-usm-priv-key', *configEntryPath,
**dict(default=None))
log.info(
'new USM encryption key: %s, encryption protocol: %s'
% (usmPrivKey, usmPrivProto))
config.addV3User(snmpEngine, usmUser, usmAuthProto,
usmAuthKey, usmPrivProto, usmPrivKey)
else:
config.addV3User(snmpEngine, usmUser, usmAuthProto,
usmAuthKey)
else:
config.addV3User(snmpEngine, usmUser)
snmpEngineMap['securityName'][securityName] = securityModel
configKey.append(securityModel)
configKey.append(securityLevel)
configKey.append(securityName)
else:
raise SnmpfwdError('unknown snmp-security-model: %s' %
securityModel)
configKey = tuple(configKey)
if configKey in credIdMap:
log.error(
'ambiguous configuration for key snmp-credentials-id=%s at %s'
% (credId, '.'.join(configEntryPath)))
return
credIdMap[configKey] = credId
duplicates = {}
for peerCfgPath in cfgTree.getPathsToAttr('snmp-peer-id'):
peerId = cfgTree.getAttrValue('snmp-peer-id', *peerCfgPath)
if peerId in duplicates:
log.error(
'duplicate snmp-peer-id=%s at %s and %s' %
(peerId, '.'.join(peerCfgPath), '.'.join(duplicates[peerId])))
return
duplicates[peerId] = peerCfgPath
log.info('configuring peer ID %s (at %s)...' %
(peerId, '.'.join(peerCfgPath)))
transportDomain = cfgTree.getAttrValue('snmp-transport-domain',
*peerCfgPath)
if transportDomain not in peerIdMap:
peerIdMap[transportDomain] = []
for peerAddress in cfgTree.getAttrValue(
'snmp-peer-address-pattern-list', *peerCfgPath,
**dict(vector=True)):
for bindAddress in cfgTree.getAttrValue(
'snmp-bind-address-pattern-list', *peerCfgPath,
**dict(vector=True)):
peerIdMap[transportDomain].append(
(re.compile(peerAddress + '#' + bindAddress), peerId))
duplicates = {}
for contextCfgPath in cfgTree.getPathsToAttr('snmp-context-id'):
contextId = cfgTree.getAttrValue('snmp-context-id', *contextCfgPath)
if contextId in duplicates:
log.error('duplicate snmp-context-id=%s at %s and %s' %
(contextId, '.'.join(contextCfgPath), '.'.join(
duplicates[contextId])))
return
duplicates[contextId] = contextCfgPath
k = '#'.join((cfgTree.getAttrValue('snmp-context-engine-id-pattern',
*contextCfgPath),
cfgTree.getAttrValue('snmp-context-name-pattern',
*contextCfgPath)))
log.info('configuring context ID %s (at %s), composite key: %s' %
(contextId, '.'.join(contextCfgPath), k))
contextIdList.append((contextId, re.compile(k)))
duplicates = {}
for contentCfgPath in cfgTree.getPathsToAttr('snmp-content-id'):
contentId = cfgTree.getAttrValue('snmp-content-id', *contentCfgPath)
if contentId in duplicates:
log.error('duplicate snmp-content-id=%s at %s and %s' %
(contentId, '.'.join(contentCfgPath), '.'.join(
duplicates[contentId])))
return
duplicates[contentId] = contentCfgPath
for x in cfgTree.getAttrValue('snmp-pdu-oid-prefix-pattern-list',
*contentCfgPath, **dict(vector=True)):
k = '#'.join([
cfgTree.getAttrValue('snmp-pdu-type-pattern', *contentCfgPath),
x
])
log.info('configuring content ID %s (at %s), composite key: %s' %
(contentId, '.'.join(contentCfgPath), k))
contentIdList.append((contentId, re.compile(k)))
del duplicates
for pluginCfgPath in cfgTree.getPathsToAttr('using-plugin-id-list'):
pluginIdList = cfgTree.getAttrValue('using-plugin-id-list',
*pluginCfgPath,
**dict(vector=True))
log.info('configuring plugin ID(s) %s (at %s)...' %
(','.join(pluginIdList), '.'.join(pluginCfgPath)))
for credId in cfgTree.getAttrValue('matching-snmp-credentials-id-list',
*pluginCfgPath,
**dict(vector=True)):
for peerId in cfgTree.getAttrValue('matching-snmp-peer-id-list',
*pluginCfgPath,
**dict(vector=True)):
for contextId in cfgTree.getAttrValue(
'matching-snmp-context-id-list', *pluginCfgPath,
**dict(vector=True)):
for contentId in cfgTree.getAttrValue(
'matching-snmp-content-id-list', *pluginCfgPath,
**dict(vector=True)):
k = credId, contextId, peerId, contentId
if k in pluginIdMap:
log.error(
'duplicate snmp-credentials-id %s, snmp-context-id %s, snmp-peer-id %s, snmp-content-id %s at plugin-id(s) %s'
% (credId, contextId, peerId, contentId,
','.join(pluginIdList)))
return
else:
log.info(
'configuring plugin(s) %s (at %s), composite key: %s'
% (','.join(pluginIdList),
'.'.join(pluginCfgPath), '/'.join(k)))
for pluginId in pluginIdList:
if not pluginManager.hasPlugin(pluginId):
log.error(
'undefined plugin ID %s referenced at %s'
% (pluginId, '.'.join(pluginCfgPath)))
return
pluginIdMap[k] = pluginIdList
for routeCfgPath in cfgTree.getPathsToAttr('using-trunk-id-list'):
trunkIdList = cfgTree.getAttrValue('using-trunk-id-list',
*routeCfgPath, **dict(vector=True))
log.info('configuring destination trunk ID(s) %s (at %s)...' %
(','.join(trunkIdList), '.'.join(routeCfgPath)))
for credId in cfgTree.getAttrValue('matching-snmp-credentials-id-list',
*routeCfgPath, **dict(vector=True)):
for peerId in cfgTree.getAttrValue('matching-snmp-peer-id-list',
*routeCfgPath,
**dict(vector=True)):
for contextId in cfgTree.getAttrValue(
'matching-snmp-context-id-list', *routeCfgPath,
**dict(vector=True)):
for contentId in cfgTree.getAttrValue(
'matching-snmp-content-id-list', *routeCfgPath,
**dict(vector=True)):
k = credId, contextId, peerId, contentId
if k in trunkIdMap:
log.error(
'duplicate snmp-credentials-id %s, snmp-context-id %s, snmp-peer-id %s, snmp-content-id %s at trunk-id(s) %s'
% (credId, contextId, peerId, contentId,
','.join(trunkIdList)))
return
else:
trunkIdMap[k] = trunkIdList
log.info(
'configuring trunk routing to %s (at %s), composite key: %s'
% (','.join(trunkIdList), '.'.join(routeCfgPath),
'/'.join(k)))
def dataCbFun(trunkId, msgId, msg):
log.debug('message ID %s received from trunk %s' % (msgId, trunkId))
trunkingManager = TrunkingManager(dataCbFun)
def getTrunkAddr(a, port=0):
f = lambda h, p=port: (h, int(p))
try:
return f(*a.split(':'))
except Exception:
raise SnmpfwdError('improper IPv4 endpoint %s' % a)
for trunkCfgPath in cfgTree.getPathsToAttr('trunk-id'):
trunkId = cfgTree.getAttrValue('trunk-id', *trunkCfgPath)
secret = cfgTree.getAttrValue('trunk-crypto-key', *trunkCfgPath,
**dict(default=''))
secret = secret and (secret * ((16 // len(secret)) + 1))[:16]
log.info('configuring trunk ID %s (at %s)...' %
(trunkId, '.'.join(trunkCfgPath)))
connectionMode = cfgTree.getAttrValue('trunk-connection-mode',
*trunkCfgPath)
if connectionMode == 'client':
trunkingManager.addClient(
trunkId,
getTrunkAddr(
cfgTree.getAttrValue('trunk-bind-address', *trunkCfgPath)),
getTrunkAddr(
cfgTree.getAttrValue('trunk-peer-address', *trunkCfgPath),
30201),
cfgTree.getAttrValue('trunk-ping-period',
*trunkCfgPath,
default=0,
expect=int), secret)
log.info(
'new trunking client from %s to %s' %
(cfgTree.getAttrValue('trunk-bind-address', *trunkCfgPath),
cfgTree.getAttrValue('trunk-peer-address', *trunkCfgPath)))
if connectionMode == 'server':
trunkingManager.addServer(
getTrunkAddr(
cfgTree.getAttrValue('trunk-bind-address', *trunkCfgPath),
30201),
cfgTree.getAttrValue('trunk-ping-period',
*trunkCfgPath,
default=0,
expect=int), secret)
log.info(
'new trunking server at %s' %
(cfgTree.getAttrValue('trunk-bind-address', *trunkCfgPath)))
transportDispatcher.registerTimerCbFun(trunkingManager.setupTrunks,
random.randrange(1, 5))
transportDispatcher.registerTimerCbFun(trunkingManager.monitorTrunks,
random.randrange(1, 5))
try:
daemon.dropPrivileges(procUser, procGroup)
except Exception:
log.error('can not drop privileges: %s' % sys.exc_info()[1])
return
if not foregroundFlag:
try:
daemon.daemonize(pidFile)
except Exception:
log.error('can not daemonize process: %s' % sys.exc_info()[1])
return
# Run mainloop
log.info('starting I/O engine...')
transportDispatcher.jobStarted(1) # server job would never finish
# Python 2.4 does not support the "finally" clause
while True:
try:
transportDispatcher.runDispatcher()
except (PySnmpError, SnmpfwdError, socket.error):
log.error(str(sys.exc_info()[1]))
continue
except Exception:
transportDispatcher.closeDispatcher()
raise
class TrapReceiver():
def __init__(self, conf = {}):
global logger
if conf is None or any(conf) == False:
self.__conf = util.loadConfig(appName = moduleName)
else:
self.__conf = conf
logger = logging.getLogger(moduleName)
# default value
self.target = DEFAULT_HOST
self.port = DEFAULT_PORT
# validate required parameter
if 'snmpTrap' in self.__conf and 'openclos_trap_group' in self.__conf['snmpTrap'] and 'target' in self.__conf['snmpTrap']['openclos_trap_group']:
self.target = self.__conf['snmpTrap']['openclos_trap_group']['target']
else:
logger.info("snmpTrap:openclos_trap_group:target is missing from configuration. using %s" % (self.target))
if 'snmpTrap' in self.__conf and 'openclos_trap_group' in self.__conf['snmpTrap'] and 'port' in self.__conf['snmpTrap']['openclos_trap_group']:
self.port = int(self.__conf['snmpTrap']['openclos_trap_group']['port'])
else:
logger.info("snmpTrap:openclos_trap_group:port is missing from configuration. using %d" % (self.port))
if 'snmpTrap' in self.__conf and 'threadCount' in self.__conf['snmpTrap']:
self.executor = concurrent.futures.ThreadPoolExecutor(max_workers = self.__conf['snmpTrap']['threadCount'])
else:
self.executor = concurrent.futures.ThreadPoolExecutor(max_workers = DEFAULT_MAX_THREADS)
# event to stop from sleep
self.stopEvent = Event()
self.twoStageConfigurationCallback = util.getTwoStageConfigurationCallback(self.__conf)
def threadFunction(self):
self.transportDispatcher = AsynsockDispatcher()
self.transportDispatcher.registerRecvCbFun(onTrap)
# UDP/IPv4
self.transportDispatcher.registerTransport(
udp.domainName, udp.UdpSocketTransport().openServerMode((self.target, self.port))
)
self.transportDispatcher.jobStarted(1)
try:
# Dispatcher will never finish as job#1 never reaches zero
self.transportDispatcher.runDispatcher()
except:
self.transportDispatcher.closeDispatcher()
raise
else:
self.transportDispatcher.closeDispatcher()
def start(self):
logger.info("Starting trap receiver...")
self.thread = Thread(target=self.threadFunction, args=())
self.thread.start()
logger.info("Trap receiver started on %s:%d" % (self.target, self.port))
def stop(self):
logger.info("Stopping trap receiver...")
self.stopEvent.set()
self.executor.shutdown()
self.transportDispatcher.jobFinished(1)
self.thread.join()
logger.info("Trap receiver stopped")
)
)
print('Uptime: %s' % (
pMod.apiTrapPDU.getTimeStamp(reqPDU).prettyPrint()
)
)
varBinds = pMod.apiTrapPDU.getVarBindList(reqPDU)
else:
varBinds = pMod.apiPDU.getVarBindList(reqPDU)
print('Var-binds:')
for oid, val in varBinds:
print('%s = %s' % (oid.prettyPrint(), val.prettyPrint()))#打印具体的Trap信息内容
return wholeMsg
transportDispatcher = AsynsockDispatcher()#创建实例
transportDispatcher.registerRecvCbFun(cbFun)#调用处理Trap信息的函数
# UDP/IPv4
transportDispatcher.registerTransport(
udp.domainName, udp.UdpSocketTransport().openServerMode(('202.100.1.138', 162))#绑定到本地地址与UDP/162号端口
)
transportDispatcher.jobStarted(1)#开始工作
try:
# Dispatcher will never finish as job#1 never reaches zero
transportDispatcher.runDispatcher()#运行
except:
transportDispatcher.closeDispatcher()
raise
def pollFn():
#Check the heater status
errorIndication, errorStatus, errorIndex, varBinds = next(
getCmd(SnmpEngine(),
CommunityData('public',mpModel=0),
UdpTransportTarget(('localhost', 1162)),
ContextData(),
ObjectType(ObjectIdentity('1.3.6.1.2.1.1.1.0')))
)
if errorIndication:
print(errorIndication)
elif errorStatus:
print('%s at %s' % (
errorStatus.prettyPrint(),
errorIndex and varBinds[int(errorIndex)-1][0] or '?'
)
)
else:
for varBind in varBinds:
print(' = '.join([ x.prettyPrint() for x in varBind ]))
# Get the temperature
errorIndication, errorStatus, errorIndex, varBinds = next(
getCmd(SnmpEngine(),
CommunityData('public',mpModel=0),
UdpTransportTarget(('localhost', 1161)),
ContextData(),
ObjectType(ObjectIdentity('1.3.6.1.2.1.1.1.0')))
)
if errorIndication:
print(errorIndication)
elif errorStatus:
print('%s at %s' % (
errorStatus.prettyPrint(),
errorIndex and varBinds[int(errorIndex)-1][0] or '?'
)
)
else:
#for varBind in varBinds:
# print(' = '.join([ x.prettyPrint() for x in varBind ]))
#SET Command
#Check if the temperature is less than 10
for oid, val in varBinds:
print('%s = %s' % (oid.prettyPrint(), val.prettyPrint()))
returnedVal = int(val)
if (returnedVal < 10):
print returnedVal
# Protocol version to use
#pMod = api.protoModules[api.protoVersion1]
pMod = api.protoModules[api.protoVersion2c]
# Build PDU
reqPDU = pMod.SetRequestPDU()
pMod.apiPDU.setDefaults(reqPDU)
pMod.apiPDU.setVarBinds(
reqPDU,
# Change the heater status to ON
( ('1.3.6.1.2.1.1.1.0', pMod.OctetString('ON')),
# ('1.3.6.1.2.1.1.3.0', pMod.TimeTicks(12))
)
)
# Build message
reqMsg = pMod.Message()
pMod.apiMessage.setDefaults(reqMsg)
pMod.apiMessage.setCommunity(reqMsg, 'public')
pMod.apiMessage.setPDU(reqMsg, reqPDU)
startedAt = time()
def cbTimerFun(timeNow):
if timeNow - startedAt > 3:
raise Exception("Request timed out")
def cbRecvFun(transportDispatcher, transportDomain, transportAddress,
wholeMsg, reqPDU=reqPDU):
while wholeMsg:
rspMsg, wholeMsg = decoder.decode(wholeMsg, asn1Spec=pMod.Message())
rspPDU = pMod.apiMessage.getPDU(rspMsg)
# Match response to request
if pMod.apiPDU.getRequestID(reqPDU)==pMod.apiPDU.getRequestID(rspPDU):
# Check for SNMP errors reported
errorStatus = pMod.apiPDU.getErrorStatus(rspPDU)
if errorStatus:
print(errorStatus.prettyPrint())
else:
for oid, val in pMod.apiPDU.getVarBinds(rspPDU):
print('%s = %s' (oid.prettyPrint(), val.prettyPrint()))
transportDispatcher.jobFinished(1)
return wholeMsg
transportDispatcher = AsynsockDispatcher()
transportDispatcher.registerRecvCbFun(cbRecvFun)
transportDispatcher.registerTimerCbFun(cbTimerFun)
# UDP/IPv4
transportDispatcher.registerTransport(
udp.domainName, udp.UdpSocketTransport().openClientMode()
)
# Pass message to dispatcher
transportDispatcher.sendMessage(
encoder.encode(reqMsg), udp.domainName, ('localhost', 1162)
)
transportDispatcher.jobStarted(1)
# Dispatcher will finish as job#1 counter reaches zero
transportDispatcher.runDispatcher()
transportDispatcher.closeDispatcher()
else:
print "value greater than 10"
'''
Created on 2012-9-9
@author: zongzong
'''
# Notification Originator Application (TRAP)
from pysnmp.carrier.asynsock.dispatch import AsynsockDispatcher
from pysnmp.carrier.asynsock.dgram import udp
from pyasn1.codec.ber import encoder
from pysnmp.proto import api
# Protocol version to use
verID = api.protoVersion1
pMod = api.protoModules[verID]
# Build PDU
trapPDU = pMod.TrapPDU()
pMod.apiTrapPDU.setDefaults(trapPDU)
# Traps have quite different semantics among proto versions
if verID == api.protoVersion1:
pMod.apiTrapPDU.setEnterprise(trapPDU, (1, 3, 6, 1, 6, 3, 1, 1, 5, 1))
pMod.apiTrapPDU.setGenericTrap(trapPDU, 'coldStart')
# Build message
trapMsg = pMod.Message()
pMod.apiMessage.setDefaults(trapMsg)
pMod.apiMessage.setCommunity(trapMsg, 'public')
pMod.apiMessage.setPDU(trapMsg, trapPDU)
transportDispatcher = AsynsockDispatcher()
transportDispatcher.registerTransport(
udp.domainName, udp.UdpSocketTransport().openClientMode()
)
transportDispatcher.sendMessage(
encoder.encode(trapMsg), udp.domainName, ('10.8.80.108', 162)
'''
Created on 2012-9-9
@author: zongzong
'''
# Notification Originator Application (TRAP)
from pysnmp.carrier.asynsock.dispatch import AsynsockDispatcher
from pysnmp.carrier.asynsock.dgram import udp
from pyasn1.codec.ber import encoder
from pysnmp.proto import api
# Protocol version to use
verID = api.protoVersion1
pMod = api.protoModules[verID]
# Build PDU
trapPDU = pMod.TrapPDU()
pMod.apiTrapPDU.setDefaults(trapPDU)
# Traps have quite different semantics among proto versions
if verID == api.protoVersion1:
pMod.apiTrapPDU.setEnterprise(trapPDU, (1, 3, 6, 1, 6, 3, 1, 1, 5, 1))
pMod.apiTrapPDU.setGenericTrap(trapPDU, 'coldStart')
# Build message
trapMsg = pMod.Message()
pMod.apiMessage.setDefaults(trapMsg)
pMod.apiMessage.setCommunity(trapMsg, 'public')
pMod.apiMessage.setPDU(trapMsg, trapPDU)
transportDispatcher = AsynsockDispatcher()
transportDispatcher.registerTransport(
udp.domainName,
udp.UdpSocketTransport().openClientMode())
transportDispatcher.sendMessage(encoder.encode(trapMsg), udp.domainName,
('10.8.80.108', 162))
def start_trap(self, pattern_end_trap, time_end_trap,
timeout, port, queue):
"""
:param pattern_end_trap
**OPTION** the pattern you are looking for in the trap to
stop trap. If not defined, trap will be stopped after
timeout value
:param time_end_trap
**OPTION** the time for running trap. Default: 30
:param timeout
**OPTION** the timeout for snmp trap. Default: 300.
:param port
**OPTION** the port of snmp trap.
:return:
"""
t.log("DEBUG", "Entering 'start_trap'\n"+__file__)
import warnings
warnings.simplefilter("ignore", ResourceWarning)
startedat = time.time()
#global results
global RESPONSE
RESPONSE = ''
def cbfun(transportdispatcher, transportdomain, transportaddress,
wholemsg):
t.log("DEBUG", "Entering 'cbfun'\n"+__file__)
#global results
global RESPONSE
while wholemsg:
msgver = int(api.decodeMessageVersion(wholemsg))
if msgver in api.protoModules:
pmod = api.protoModules[msgver]
else:
RESPONSE += 'Unsupported SNMP version %s' % msgver
return
reqmsg, wholemsg = decoder.decode(
wholemsg, asn1Spec=pmod.Message(),
)
RESPONSE += 'Notification message from %s:%s: \n' % (
transportdomain, transportaddress
)
reqpdu = pmod.apiMessage.getPDU(reqmsg)
if msgver == api.protoVersion1:
varbinds = pmod.apiTrapPDU.getVarBindList(reqpdu)
RESPONSE += 'Var-binds: \n'
for oid, val in varbinds:
RESPONSE += '%s = %s \n' % (oid.prettyPrint(),
val.prettyPrint())
if pattern_end_trap and re.search(pattern_end_trap,
RESPONSE, re.I):
transportdispatcher.jobFinished(1)
RESPONSE += "Stopped trap \n"
RESPONSE += 'Enterprise: %s \n' % (
pmod.apiTrapPDU.getEnterprise(reqpdu).prettyPrint()
)
RESPONSE += 'Agent Address: %s \n' % (
pmod.apiTrapPDU.getAgentAddr(reqpdu).prettyPrint()
)
RESPONSE += 'Generic Trap: %s \n' % (
pmod.apiTrapPDU.getGenericTrap(
reqpdu).prettyPrint())
RESPONSE += 'Specific Trap: %s \n' % (
pmod.apiTrapPDU.getSpecificTrap(
reqpdu).prettyPrint()
)
RESPONSE += 'Uptime: %s \n' % (
pmod.apiTrapPDU.getTimeStamp(
reqpdu).prettyPrint()
)
else:
varbinds = pmod.apiPDU.getVarBindList(reqpdu)
def cbtimerfun(timenow):
t.log("DEBUG", "Entering 'cbtimerfun'\n"+__file__)
#global results
global RESPONSE
if time_end_trap is not None:
if timenow - startedat >= time_end_trap:
transportdispatcher.jobFinished(1)
RESPONSE += "Stopped trap \n"
if timenow - startedat >= timeout:
t.log(level="DEBUG", message="Request timed out \n")
raise Exception("Request timed out \n")
transportdispatcher = AsynsockDispatcher()
transportdispatcher.registerRecvCbFun(cbfun)
transportdispatcher.registerTimerCbFun(cbtimerfun)
# UDP/IPv4
transportdispatcher.registerTransport(
udp.domainName, udp.UdpSocketTransport().openServerMode(
(self.trap_server_v4, port))
)
# UDP/IPv6
transportdispatcher.registerTransport(
udp6.domainName, udp6.Udp6SocketTransport().openServerMode(
(self.trap_server_v6, port))
)
transportdispatcher.jobStarted(1)
try:
# Dispatcher will never finish as job#1 never reaches zero
transportdispatcher.runDispatcher()
except:
transportdispatcher.closeDispatcher()
queue.put(RESPONSE)
t.log(level="DEBUG", message="Exiting 'start_trap' with return value/code :\n")
return
transportDispatcher.jobStarted(1)
'''
## UDP/IPv6 (second copy of the same PDU will be sent)
transportDispatcher.registerTransport(
udp6.domainName, udp6.Udp6SocketTransport().openClientMode()
)
# Pass message to dispatcher
transportDispatcher.sendMessage(
encoder.encode(reqMsg), udp6.domainName, ('::1', 161)
)
transportDispatcher.jobStarted(1)
'''
## Local domain socket
#transportDispatcher.registerTransport(
# unix.domainName, unix.UnixSocketTransport().openClientMode()
#)
#
# Pass message to dispatcher
#transportDispatcher.sendMessage(
# encoder.encode(reqMsg), unix.domainName, '/tmp/snmp-agent'
#)
#transportDispatcher.jobStarted(1)
# Dispatcher will finish as job#1 counter reaches zero
transportDispatcher.runDispatcher()
transportDispatcher.closeDispatcher()
def main():
parser = argparse.ArgumentParser(description="HEALTH CHECKER.")
parser.add_argument("-c",
"--config",
default="/etc/healthchecker.yaml",
help="Path to config file.")
parser.add_argument("-v",
"--verbose",
action="count",
default=0,
help="Increase logging verbosity.")
parser.add_argument("-q",
"--quiet",
action="count",
default=0,
help="Decrease logging verbosity.")
parser.add_argument("-V",
"--version",
action="version",
version="%%(prog)s %s" % __version__,
help="Display version information.")
args = parser.parse_args()
oid_translate.load_mibs()
config = Config.from_file(args.config)
db_host, db_port, db_name, db_user, db_passwd = config.get_database_config(
)
db_engine = PooledMySQLDatabase(
db_name, **{
'host': db_host,
'port': db_port,
'password': db_passwd,
'user': db_user
})
models = [Target, FPingMessage, Device, EventMessage, Port]
db_engine.bind(models)
community = config["community"]
if not community:
community = None
ipv6_server = config["ipv6"]
if not ipv6_server:
ipv6_server = None
trap_cb = TrapperCallback(db_engine, config, community)
logging.basicConfig(
filename=LOGFILE,
level=10, #get_loglevel(args),
format=LOGFORMAT)
transport_dispatcher = AsynsockDispatcher()
transport_dispatcher.registerRecvCbFun(trap_cb)
if ipv6_server:
transport_dispatcher.registerTransport(
udp6.domainName,
udp6.Udp6SocketTransport().openServerMode(
("::1", int(config["trap_port"]))))
transport_dispatcher.registerTransport(
udp.domainName,
udp.UdpSocketTransport().openServerMode(
("0.0.0.0", int(config["trap_port"]))))
transport_dispatcher.jobStarted(1)
process_count = config['process_count']
if not process_count:
process_count = (
multiprocessing.cpu_count() * 2 +
1) if (multiprocessing.cpu_count() * 2 + 1) < 11 else 10
logging.info("multiprocess count is : %s" % process_count)
fping_count = int(config['fping_count'])
if not fping_count:
fping_count = 5
logging.info("fping count is : %d" % fping_count)
interval_time = int(config['interval_time'])
if not interval_time:
interval_time = 1
fping_cb = FPingCallback(db_engine)
scheduler = BackgroundScheduler()
trigger = IntervalTrigger(minutes=interval_time) # FIX PYINSTALL BUG
scheduler.add_job(fping_cb,
trigger,
args=(process_count, fping_count),
max_instances=10)
#scheduler.add_job(fping_cb, trigger='interval', args=(process_count, fping_count),
# max_instances=10, minutes=interval_time)
## syslog service
host = '127.0.0.1'
port = 8889
syslog_service = SyslogService(db_engine, host, port)
TRAP = False
try:
scheduler.start()
if TRAP: #TODO new thread
transport_dispatcher.runDispatcher()
else:
#redo_start_time = datetime.datetime.now() + datetime.timedelta(seconds=-20)
redo_start_time = config.get("redo_start_time")
if redo_start_time is None:
redo_start_time = False
syslog_service.start(redo_start_time)
except KeyboardInterrupt:
pass
finally:
logging.info("Shutdown Scheduler...")
scheduler.shutdown()
if TRAP:
logging.info("Stopping Transport Dispatcher...")
transport_dispatcher.closeDispatcher()
else:
syslog_service.stop()
logging.info("Bye")
